This is also why the Bay Area is a truly great place to live in. So many small companies are there for us to choose. They move fast yet have reasonable work-life balance. They offer great financial perspective too, which can be far better than big companies if one's lucky.
Of course, I'm not saying big companies are all bad. Indeed, some people are great at navigating company dynamics. They build solid relationship in a complex environment. They make things happen despite bureaucracy. They lead multiple teams to achieve impossibles. They cut through red tapes like hot knife cutting through butter. They build a company to last.
So, the real question one should ask is: which type of person am I?