I think to would be extremely difficult to make the bus better than driving for people that already have a car. The most obvious option is making parking expensive or hard to find but I think that would lead to new politicians before people really embrace the bus. Reality is that americans dont enjoy being in enclosed spaces with strangers, hard to overcome that.
The hardware store probably has a delivery service, because not everyone has a van or a pickup for those 2x4s. But if you DIY big stuff often enough for that to be a factor to consider, you're probably not the target group anyway. Just like people who need to drive 800 miles without a stop every other week aren't the target group for current EVs.
Is this a hypothetical future hardware store delivery service that enables a bus? No hardware store I have seen has a delivery service. I do a fair amount of gardening, and while most garden stores (not hardware stores, dedicated stores for landscaping and gardening) have the capability to deliver, it is always a very expensive service ($50-100 for a trip of less than 5 miles).
Most cars can fit a few 8' 2x4s as well as several bags of bulk dirt, and what hardware stores often have is a cutting service that lets you make those 2x4s shorter for transit. None of those would fit on a bus.
Home Depot and Lowes (the two largest chains in the US) both have delivery. Home Depot also has rental trucks, as does UHaul (trucks and vans) if you need to self-drive the product and decided to not own a car.
The local lumber/building supply companies also usually have delivery, though they can be harder to deal with than a consumer-oriented hardware store.
> it is always a very expensive service ($50-100 for a trip of less than 5 miles)
A.k.a the cost of not owning a car. Where I live, I could pay 100€ weekly for deliveries and it'll still be cheaper than owning and operating a decent (as in, not a 20th century rust bucket) car would be.
Theres no getting past the fact that being on the bus means youre necessarily close to strangers with no recourse when they do things you dont like. This is a pretty big problem to overcome in the US. The bus needs to be obviously much better than driving to get people to switch when they already own a car. Just a little faster/more convenient/cheaper wont cut it.
It's fine that you don't want to be next to people, but then you need to pay for that privilege. It's not sustainable otherwise.
The big problem with sprawl is that it's subsidized. The federal government taxes the population at large and uses that tax money to build large roads and lay down the necessary utilities, sewage, and drainage. Interstates and interstate connections (viaducts, onramps, offramps, etc) come purely out of the FHWA budget which comes from taxes. Gas taxes help but the federal gas tax hasn't been changed since 1990 (indexed for inflation that's basically been a discounting gas tax) and as fuel efficiency standards increase and hybrid/EV penetration increases gas taxes end up netting less money per mile driven. Add to that the fact that cars are getting heavier in the US, increasing wear-and-tear on existing roads, and you're basically making maintenance of roads in the US cost more money per taxpayer. Some states have been increasing vehicle registration fees to compensate but that remains very unpopular.
Local roads are initially funded by the government and based on whether they are collector roads or arterials, state and federal governments allocate extra money to these roads. But when construction finishes these roads often need to be maintained by local municipalities which is when the problems come in. Often times municipalities, especially ones with lower incomes, begin having trouble maintaining roads. Higher income municipalities raise local taxes to pay for their roads but Americans also hate paying local taxes which makes this unpopular and often unviable in poorer municipalities where incomes cannot accommodate the extra tax. That's how you get huge, sprawly cities that have terrible pavement. My city is struggling with this. The rust belt has tons of cities with this.
Moreover as the US population increases we continue to sprawl outward, destroying nature with sprawly housing developments that are viable because federal and state governments often pay for initial development. You mention democracy but there's not that much democracy going on. Often times rural voters aren't organized enough to create the kind of opposition to sprawl that urban voters have. You can't have opposition via public comment in a rural area because there is no planning agency which listens to public comment in many rural areas. In fact that's often why developers target unincorporated rural areas in the first place.
Unlike Europe, Asian countries are fine with car use, but don't subsidize it nearly as much as the US does. Japan, outside of Tokyo (which is a huge city and an outlier in the way NYC is), has narrower and fewer lanes on their roads for given traffic volumes. Public street parking mostly doesn't exist and authorities quickly tow vehicles that park where they're not supposed to. As such there's a robust market for parking lots. The closer you are to a city center the more vertical, compact, and expensive the lots are. The further you are the cheaper the lots are. In really rural towns the towns run parking lots that are basically free during the day.
The US does a lot to encourage car use. It has much higher LOS standards for its roads than other developed countries, it uses federal and state tax money to offer free parking, police officers are kind to drivers and let them overstay parking limits for longer than they should and only ticket the most flagrant offenders tacitly allowing everything from using your phone in the car to styling your hair in it. And this car culture is irrational and taking up an increasing amount of GDP and emissions.
Also if it's democracy that's your problem, this article in Colorado is all about democracy. The voters voted in a pro-transit governor, they voted in the tax increases to fund additional transit, and they approve of planning officials who refuse to widen highways. So car culture isn't as popular in the US as some think. There is an increasingly vocal minority of people who aren't happy that car culture is losing its popularity though.
This has never stopped politicians before, not really sure why it will now.
Polis is much more than a pro transit governor. He's a successful serial entrepreneur, he's gay, he's charming in a nerdy way, and he's pragmatic. I dont think his election proves much about political will in regards to transit policy.
The problem is that we live in a democracy and most American voters dont want to live in europe. They mostly want a single family home in a low density suburban area, which makes public transit difficult.