I have really enjoyed working at small companies as well - not two person startups working on hopes and dreams, but companies under a year old that are struggling to stablize their offering of a product that they know there is a market for. Startups can be lots of fun, they can also be a grind trying to keep up with shifting customer requests - especially if you find yourself with a single dominant customer that knows they can push you around. Start ups can buy you an island or you could make 60k a year for three years and then be let go immediately prior to an IPO. There is an immense amount of risk there and I'd like to see some shifts in startup culture to provide a bit more assurances since the experience can vary wildly.
Maybe employees at small companies need to be guaranteed (i.e. by the government) a portion of that company for their work, maybe work days need to have a hard limit on them - maybe there just needs to be more VC funding sloshing around and given away in small doses - 200k to twenty companies will produce a lot more success than 4m to a single company.