While they're still burning fossil fuels, carbon dioxide is a less potent greenhouse gas than methane.

Yeah, and we actually can technically deal with carbon dioxide pretty easy. There are various building materials that can be made with carbon...or even from anything made from carbon. One of the worst things about us destroying our oceans is that algae and such deal with a lot more carbon dioxide than all the forests...which we are also destroying at a record pace. We could start making buildings out of products that capture carbon either with plants or machines.

Concrete doesn't have to be reinforced with steel. It can be reinforced with fabric like a cast.

We could grow all sorts of things for building materials.

BTW, capturing methane for farmers is extremely lucrative. I saw a documentary once on a farmer that's using the methane from his cows to power his farm. I laugh every time idiotic politicians talk shit about methane from cows, because right now we're just throwing money away burning natural gas on oil rigs and letting piles of cow shit fume off with the methane. I'm not a huge fan of fossil fuels either...but that's because of the way the industry is. They're raising all those animals, why not increase their income and help the environment at the same time?

I think the primary problem is that they're just unwilling to learn. Ironically there are tons of ways they could increase their profit while doing things good for the environment. They'd just rather do things the way they have always done them because they don't like change.