Literally everything you just proposed is beyond a pipe dream under the current rigged system. The owners bribe the Republicans and Neoliberals to dictate their preferred economic policy as they stoke social issues to keep the peasants divided. The oligarchs that bribe both major parties will never permit UBI, they spent decades systematically legalizing political bribery culminating in citizens united, they are the reason Antitrust laws on the books aren't enforced, they are the reason the fairness doctrine was abandoned for private profit, and they like us fighting over abortion, immigration, guns, etc because it stops us from uniting against them.

Also the idea that even without the oligarchs that politicians would regulate their own term limits is absurd. Why do you think they exempt their pay from government shutdowns and have lifetime universal healthcare just for themselves?

The last, last, last chance to do any of what you suggest using the constitutional tools of the system would have been to soundly and firmly reject the Reagan grift, trickle down economics, and the Jack Welch dehumanization of the economy 50 years ago. Instead they convinced their "opposition" party to take the bribes and the peasants not to engage in "unseemly" class war as they won without a fight. We've lived under class occupation ever since. This system is beyond all salvation.

Don't worry though, the half of the peasants that have been indoctrinated from childhood to believe what you believe will protect that occupation against their own interests to the bitter end, so you have nothing to fear from us tankies.

Unfortunately for you, the sycophants, and capitalists, and everyone else including me, climate change is the physical reaction to our careless actions, and is completely immune to any and all pathetic attempts to obfuscate, blackmail, bribe, assassinate, or otherwise con it into backing down, despite all the vaporware like clean coal, corn ethanol, hydrogen, and planet scale carbon filter the capitalists try to make another buck on before last call. But oowee, they're trying to bullshit their way out of it to darkly hilarious effect.

https://www.vice.com/en/article/7kxdxa/1500-scientists-warn-society-could-collapse-this-century-in-dire-climate-report

https://www.nature.com/articles/d41586-020-02669-8