I'm shocked Apple haven't acquired Procreate yet. It's nearly always in iPad marketing material. Personally I know so many artists who've bought iPads, and the only app they have installed is Procreate.

It’s possible they simply don’t want to sell. ProCreate parent company is extremely successful on its own, it’s possible being part of Apple wouldn’t bring anything to the table for them. Looking at some apps Apple acquired it’s not clear that being part of a mega corporation benefits creative tools.

Seems like they made their decision when they acquired Pixelmator.