Most companies lack the resources/willpower to train/code-review/mentor their own employees, expecting them to do it for candidates is kind of naive.

So do it at your company and have a competitive advantage.

Done it. Worked really well (got great people, which got more great people, virtuous cycle etc). Struggled to convince a couple of other companies to adopt the mindset. Hoping to do it again some day.

Yeah, life's hard. But isn't that why it's worth it to fight for a better life? I get it though, "better" is relative.