But that assumes the population can't vote for someone else who will kick them out. As far as I know, there are no plans to stop third parties from being created, independents from running for political roles, or people voting for whoever they want to vote for.
If a large percentage of the population is going hungry or can't find jobs, then they'll vote for people that (at least say) they'll change that. If any of those people actually do that, then billionaires are toast, their assets could be seized and the laws could be rewritten so things like a universal basic income are implemented.
It doesn't matter how many resources someone has, they're not overthrowing the government, replacing democracy with a dictatorship or doing anything of the sort, especially not worldwide.