And when he was immersed into the money-making game, he was all in, willing to do anything to win.
But when you eventually beat the game, you don't get that thrilled anymore, there's no big challenge ahead. You can play for a while to see how far can you go, but it ends up being boring after a while.
So, I think he moved on to basically a real life version of reversal Plague Inc (instead of trying to infect everyone, he tries to beat a disease). This is a harder challenge in many ways, because he needs to deal with tons of geopolitics, international affairs, research and development, human behavior, etc.
If you see it from that perspective, you can still see that he is still a hard player, but this time, he is playing a game that can be beneficial for everybody, not just himself.
To be pedantic, Plague Inc is just a reversed clone of the board game Pandemic.
But overall, I think you’re spot on with his motivation.
A few years back, I was fortunate to have a random conversation with a reknown researcher from Princeton Plasma Physics Laboratory. He was lucid and blunt: if we had more money we could solve fusion.
A couple days later there was news of China having done the longest running fusion reactor burst (?) to date. Two-plus minutes.
I keep thinking about that conversation and his "promise."
If so, no it is very clearly not the same because Bill Gates is not a dictator nor is he responsible for killing people. To compare a wealthy monopolist to a murderous dictator lacks perspective, to say the least.
Erdogan haven’t executed a single person and yet Turkey has become a terrible place for people with ambition, sky high brain drain is the norm, almost all public contracts are won by the same few businessmen however the government has widespread social programs so no one is actually starving or lacks access to modern medicine.
Should people be grateful? Probably not as much as the businessmen that get all the contracts and becoming the biggest in the world.