In my experience, one of the the problems is that Macs are hilariously underpowered for many modern dev and analytics use cases. So the workaround is to work off remote machines/clusters over web interfaces/SSH but for many development use cases that's just slow and clunky - the have merit more in productionising. The series of hardware clusterfucks on Mac haven't helped ether.

So I've seen Mac users who work in these areas get sick of the issues and limitations and switch to Win 10 + sometimes WSL.

The people remaining with Macs are executive suite (who go for iPad pros) and account execs who do sales where it looks cool to go pull out a Mac. However even there people are increasingly looking dumb when they want to present something and go on 5 min dongle troubleshooting hunt because Mac killed HDMI and VGA ports and start their presentation appearing incompetent. Sometimes over web screen shares, only the desktop shows and not the applications.

By refusing to focus on hardware/software quality and power users, Apple has lost the game on high end.