I suspect Apple would be perfectly content if they never sold another Mac Pro. I suspect most Mac Pros manufactured are for internal use. Their main products don't have a GPU, so neither does this. It already had an F-U price. Whatever customers use them for, it's an irrelevant side hustle for Apple.
I'd say they should just kill the product off to stop all the incessant whining about what a ripoff it is, but I'm sure they'd counter that there's no such thing as bad publicity.