Everytime I look at small problems or big global problems, if you follow the money trail, it all leads to some billionaire who is either working towards increasing their wealth or protecting their wealth from decreasing.
Everything from politics, climate change, workers rights, democratic government, technology, land rights, human rights can all be rendered down to people fighting another group of people who defend the rights of a billionaire to keep their wealth or to expand their control.
If humanity got rid of or outlawed the notion of any one individual owning far too much money than they could ever possibly spend in a lifetime, we could free up so much wealth and energy to do other things like save ourselves from climate change.
Taxation … after a certain level of wealth, all excess wealth is either taxed completely or near completely and it would discourage anyone from wanting to gain too much excessive wealth.
It wouldn’t turn our world into a utopia … there will always be aholes that will want to run and control the world. The difference would be that they would have less power and less ability to actually be able to control the world.
And yes billionaires are not the only problem to our world’s problems but they are a big part of it … they are also actively the ones who make it harder for everyone else to solve the world’s problems. So getting rid of them may not solve the world’s problems … but it would make it a whole lot easier to deal with the problems we already have.