Companies Won't Keep Their Net-Zero Promises

They never did. Every "net zero" pledge was accomplished through carbon credits. Which is basically Hollywood accounting meets the environment.

A real carbon credit would be expensive to purchase and increasingly expensive as other companies bought them. For example, building out renewables would only offset carbon so much, eventually you get to the point where the grid is green which means buying more renewable deployments does nothing.

That's true of any reasonable carbon credit yet somehow the price has basically been unchanged.