So, if Bill Gates invests $1bill into this Covid vaccine and gets back $20bill...why is he called a Philantropist...? That's a businessman conartist.

Okay, but where do those profits go? Do they not get put into the pursuit of other philanthropic endeavors? The research takes time, and money. It's not like he's buying up the real estate market, and profiting for the sake of profit. He doesn't have to allocate funds to any of this research, or help the world in any way, he could just roll around in the money giggling instead. Would that be better?