Those two things are great solutions for the billionaires but absolutely suck for everyone else, no wonder you see them pushed so much.
The first is a tax which will strongly affect the poor while allowing the rich to continue as normal, the second allows the rich to control power generation and essentially continue the monopoly rather than move towards decentralised sources which can be community run.
We need to switch from a greed based system which obsesses over displays of wealth and move to a more ecologically sound way of existence, but people can’t even consider taking the slightest responsibility for their lifestyle