In a world where we have people like Trump, Musk, Thiel, et al, with extreme power and resources, why would we hope for something like climate change to be addressed?

What can scientists do? Even if they are 100% right and can prove it, they have no power to do anything. Governments of the top countries are puppets of the US, so there’s not much to do. Other governments are dealing with more mundane problems. And the “A fucked up planet affects everyone equally” is just not true. Billionaires can live in a fucked up planet just fine. They don’t even need people (as demonstrated by AI and its goal of replacing workers). They truly don’t care about us. And if the worst forecast for the planet is to come, they also won’t care (they would just live to their fullest while they can)

I won't comment on the others you mentioned, but Musk has probably done more for reducing CO2 emissions than any other human on the planet by popularizing electric vehicles and making them 'cool'.

These are the types of solutions we should be cheering, because people voluntarily chose the less-CO2 product due to its appeal. No heavy handed laws required.

Note that anyone who suggested actions that would be both implementable by an individual and extremely effective would be rapidly banned from HN.

We could build out private solar farms though.

US Greenhouse gas emissions are down 18% from 2007 levels. CO2 emissions and electricity generation are no longer linked. You might not like them, but Trump, Musk, Thiel, et al (whoever the et al are) are doing a good job pushing nuclear power as well, which promises a more energy-rich future without greenhouse emissions.

The people who truly don't care are not in the US; they're China and India, whose per capita CO2 emissions are exploding to the upside. China alone makes up like a third of the world's emissions. They don't talk about cutting emissions but about slowing their growth, and yet people are upset at US politicians as the US is busy meeting climate goals it doesn't even profess (and which don't bind China). When you look at actual data, the people you're blaming aren't the ones you should be blaming.