And Enthought used to sell one, and I think ActiveState still does. [*]
Is there a business case for a curated pacakge repo? Maybe – I know a lot of businesses (and the govenments) are vary wary of “downloading somethign random from teh internet”.
Honestly, I have no idea how I get away with it at my day job – I’m supposed to get approval for everything I install on my computer – somehow “Python 3.10 and associated libraries” has been approved 
You’d think IT departments would pay for an “Enterprise Package repository” – but I’m no entrepreneur.
[*] However, conda-forge exists because Anaconda, Inc. just couldn’t keep up.