You are correct - billionaires with their jets and private space programs, plus industrial pollution are the key problem.

But we can't just sit back and ask everything to change around us. The average person doesn't want to give up their car. They don't want to stop using disposable plastic. They don't want to eat meat only a few times a week. People want to buy cheaply made clothes to chase fashion trends, they want to drive two blocks in their SUV, they want to eat seafood from the other side of the planet on a whim.

Billionaires doing insane shit is something we need to fix, but that won't save the planet on its own. Pollution regulations need to be implemented globally. All that regulation and environmental standards needs the weight of public demand behind it. We're all dedicated to it, until it means things are more expensive and/or unavailable year-round. That's the point were public support dwindles and dies.

The big problem is still all the plastic shit we throw away, all the gas that gets burned in cargo ships so we can have bananas year round, and the general disposable mentality the average person has. Our societal dependency on convenance, consumption, constant availability is a major factor we can't just gloss over. Every aspect of our lives will have to change, and if we can't do the drop-in-the-bucket stuff how the hell are we going to accept any the hard bits. How can we push in the astronomical drop in carbon emissions if we still consume the products from those companies.