I can see the appeal of working for SF startups while living like a college student for a few years in your early 20s, or making a career out of doing it remote

I can see the appeal of working for SF startups while living like a college student for a few years in your early 20s, or making a career out of doing it remotely. I don't get how the in-person startup talent pool has any staying power. A 3/2 in a decent school district with a commute under an hour would be an insane splurge even for someone with liquid Big Tech TC.