I don't think it's impossible. It just seems that way if your only experience with politics is neoliberal US politics over the last 40 years. At some point the dam breaks. In the US neoliberalism is at the same point Soviet communism was in the 80's. It's a complete failure and everyone knows it.

Part of our political system's fiction and ability to make no progress is deeply ingrained in lobbying and expenses that is more PR than impact. I think this is the parent post's point.

We think its a "grand pie in the sky", meanwhile some other countries are making real moves. Corporations meanwhile get to "do something" while in reality doing very little.