The Bay Area has chosen stasis. That doesn't bode well for its revival as a cultural center.
SF is an attractive place so it attracts people, the vulnerable communities with less resources get pressure.
The hipster influx that was followed by the tech influx were both fueled by steadily rising disposable income (whether from trust-fund hipsters or highly-paid tech workers, later).
I don't think a starving artist influx is likely though because there's a substantial cohort of independently-wealthy people (from the US tech industry, from other US industries, and from abroad) that are going to continue to live in places with desirable climate/amenities/scenery/cultural centers/etc even if the jobs of the newly-high-income move around. So it'll probably just go back to circa-2010-hipster-less-expensive-but-still-expensive levels.