It was just finically beneficial to DuPont for the banning of Freon and moving to another product; and it would be financially devastating to go back to Freon for them as the patent on it expired (convenient the same time it was banned, and they pronounced to the world how harmful for the environment)..so now what is mostly used is again another product DuPont has a patent on!
Bingo, Enahs. It's also the reason I trust the entire anthropogenically-induced global warming idea about as far as I can throw one their stack of books that "prove" their "theory." Invariably, anything on that large a scale becomes about money, not real science or critical evaluation. I'm astounded at the number of people who won't trust a domestic politician any more than they'd trust a hungry tiger in their bedroom, but when the UN and IPCC start blathering and smokescreening about anthropogenic global warming, those same people just nod their heads sagely and swallow everything whole.
As Michael Crichton correctly pointed out, environmentalism ceased to be a scientific endeavor when the "movement" people got involved and turned it into a religion.
I'm a proud conservationist, and ardently believe in preserving nature where ever possible, (mostly, I admit, because I love outdoor sports), but I refuse to make it my religion and march around in smelly sandals with poorly-made signs. I'd rather spend my time researching the science and discovering what is really
going on, behind all the big money. Alas, that seems to be an unpopular position with many people.
I need another scotch.