You wouldn't see any billionaires.

Generally, everything would just be plain better as their dragon hoards are actually spent, and they dont hoard GDP from the rest of us. But you'd probably see a public service boom wherever they invested, and you'd likely see a lot less people struggling with anything from bills to food to even entertainment.

This is an interesting conundrum, actually. The big question at its core being:

Can you ever do enough good through philanthropy, so that it offsets the damage you had to do, in order to become a billionaire? Can even all the billionaires in the world do enough good with their money, to offset the damage done by a system, that allowed for them to become billionaires?

I, personally, don't think it is possible.

To give an actual answer: I think, the world would definitely be better, but unless those billionaires collectively used all the power their money provides, to do away with money and the possibility of billionaires altogether, I don't think it would amount to all that much.

See also, 📺 Gino D'Acampo.

Society if billionaires actually helped the people

The Owenites and other Utopian Socialists of old would rise from their graves, vindicated at long last for, against all odds, finally succeeding.

"Billionaire" means "person who can direct large amounts of the means-of-production"

The left wants to tax those people and put the MoP back under democratic control.

So if they used their control the way the People would it'd looklike socialism. But that's a hypothetical because that's not their self-interest.

I can't even imagine what color the sky would be in that world...