There are two important differences between corporations (even non-for-profit ones) and the government.
The first is that citizens have a say in who governs them. If the government does something they don't like, they can (at least in theory) vote for someone who will change it.
The second is that in most legal systems, there are differences in what governments are allowed to do and what corporations are allowed to do. For example, a government may be required to provide services to all citizens, whereas a corporation has the right to not serve certain people (such as "people who don't own a smartphone").
These differences aren't insurmountable, but it's something to keep in mind.
Regarding point 1, I would argue that citizens have more of a say in how the corporations operate, (and what corporations for that matter) as their say occurs every time they pay or not pay or engage into a commercial contract, which is much more often than once every 4 years.
The first is that citizens have a say in who governs them. If the government does something they don't like, they can (at least in theory) vote for someone who will change it.
The second is that in most legal systems, there are differences in what governments are allowed to do and what corporations are allowed to do. For example, a government may be required to provide services to all citizens, whereas a corporation has the right to not serve certain people (such as "people who don't own a smartphone").
These differences aren't insurmountable, but it's something to keep in mind.