so a quick follow up: how many startups of the last round were not located in SF? Sometimes as a non US citizen it seems like the whole startup world is all centered in SF...
SF/SV is still the most concentrated place for startups, so when you want to grow fast it's still probably the most concentrated place for talent and capital. You can certainly start a company anywhere (and people are, and that's great!), but when you want to grow fast many people still move here, now increasingly at the Series A.