Amen. But if you ever happen to invent a product category that turns out to be a huge untapped market, the gatekeepers-that-be (Google, Facebook, Apple et al.)

Amen. But if you ever happen to invent a product category that turns out to be a huge untapped market, the gatekeepers-that-be (Google, Facebook, Apple et al.) will try to enter it as well and stomp you. Even if you don't, still, they collect their rent on everything we do online nowadays.