If you tell a chemical company that it can't make X but it doesn't have a factory to make X, they are not going to be so sore about it.
If they've borrowed from the bank to make a factory that makes X and then you tell them they have to shut it down they are going to be a lot more upset. The EPA can't discharge their bank loan, for one thing.
In the case of CFCs,
https://en.wikipedia.org/wiki/Chlorofluorocarbon
there was a ban on the most wasteful uses of CFC, but the main effect was that people quit building new CFC factories, it took almost two decades to shut those factories down.