>some tax incentive makes sense, but should be done smartly (not to cover rich people buying their way in while contributing zero long-term)

Yeah, it should be tied to your job. If you work for a local tech company in a highly-skilled position requiring a lot of education and experience, then you get a big tax break. If you're just some rich person living off of investments, or you're a digital nomad working for a US company remotely, then forget it.