Good point. I work in the "relatively safe" area of academic research, but the point still holds.
Even more broadly, your thought has made me wax a little philosophical about capitalism: we believe that 1) everyone should work, 2) I only want winners to work with/for me, and 3) not everyone can be a winner. I guess you can't have all three, but we sure try.
If you put it in that light, maybe Kaggle isn't so bad. But OTOH, we do make the distinction between employees and entrepreneurs for a reason.
Wanna join a startup? Huge equity! :)