Like the development of global industry would have still emmited more greenhouse gases than the earth's ecosystem could handle.
But instead of 50 years of denying it and 10+ years of doing nothing about it it'd have been started on earlier.
Plus instead of having all the labor going into putting roller coasters on cruise ships it'd be going towards not destroying the globe for profit.
Of course but the reckoning would have been able to occur at a time where changes were starting to be noticed (ie 60 years ago) and productive forces would have been able to be moved towards more sustainable production methods instead of at the best of eternal growth and capital.