That is exactly the motivation. The problem with being a billionaire is you still have to associate with poor people. But imagine a world where your wealth completely insulates you from the resentful poor.
Watch, or read "altered carbon" for a taste of that future.
How does a billionaire have to associate with poor people? They can live in a complete bubble: house in the hills, driven by a chauffeur, private jets, private islands for holidays etc...?
That notion is based on the misconception that for there to be very rich people, other people would need to be poor — that would resent you.
Economic science has pretty much proven that when the average income in a society is higher and fewer are poor, the economy moves more money and the rich benefit more as well.