Except that it's still totally possible to make a big difference working at Facebook, Google, Amazon, Microsoft, etc, if you choose the right team. And it's ent

Except that it's still totally possible to make a big difference working at Facebook, Google, Amazon, Microsoft, etc, if you choose the right team. And it's entirely possible to be marginalized or sidelined at a late-stage startup. The two concerns, to me, are almost orthogonal.