I'm not too worried about startups: We used to have startups when they had to buy expensive physical servers and pay for business-class T1 connections and rent offices and all that. The idea that you can start a company with $20 and a dream is relatively new, and honestly a little bit of friction might be good.

But yeah, I share your concern about open source and hobby projects. My hope would be that you get free tiers that are aimed at hobby/non-profit/etc stuff, but who knows.