The rich don't care. They expect to be buffered by their ill-gotten gains.
They may be right.
The only problem is trucks, diesel trains, tractors and some ships. Ships could just go the old slow way. Diesel trains have electric replacements, trucks and tractors are hard though mostly due to sheer numbers. Then we have airplanes, big ones have no replacement but we can live without them. The pharmaceuticals we can make from biomaterials, no serious mining. Industrial heat might be a problem for a hot moment but there are some possibilities.
Water however is the key issue we will face and cannot really go around.
I'd be happy to be wrong about this!
If you would prefer, an alternative is that the (US) Gov't could 1. take over the oil companies 2. Raise the price of oil 3. Force the "Free market" that everyone's so proud of to start dealing with Oil as if there is actual scarcity for it.
If they did that tomorrow, I suspect they could stop a number of the worst polluters (businesses), and make everyone actually start working for the goal of "zero emissions".
People would hate this, and people would complain about the gov't overstepping, but the oil companies aren't going to start doing this out of the goodness of their hearts as long as they're making money hand-over-fist like they are.
I'm not saying that you're advocating doing nothing, nor am I supporting totalitarian/fascism. Just that at some point there will be decisions forced upon people; to choose who will live.
Maybe that's part of the general apathy? Do people subconsciously think that they'll be saved and those "others" will be sacrificed?