There's growing research into positive tipping points for the climate. Biden's historic investment into renewables put a finger on the scales tipping them for significantly more solar and wind investment, which will of course reduce the cost of building solar and wind and soon enough the federal government's finger won't even be needed on the scale to make solar and wind cost effective to build.

Other decarbonization efforts like pushing for more bike infrastructure leading to fewer car trips and more bike trips, and shifting cars to electricity rather than gasoline also have tipping points where it will make far more sense to do the cheaper thing that happens to be better for the climate than not