Maybe it's not about "creating something like Amazon" but rather helping people. There's more to "positive creations" than companies, in fact, if you asked a random person to rank "making Amazon" or "donating to charity" in terms of positivity, 9/10 would choose charity..
I do understand that. You asked what more could he do. It is factually true that donating would be an additional positive impact that he would have on the world. If you don't understand that, this discussion is pointless
Donating