Having a computer named “pro” is marketing, that doesn’t mean they cater to actual pro users. Go ahead and Google “has apple abandoned pro market” and see for yourself whether anyone else thinks so, and why. The hardware isn’t the main problem, the software is, as @mondoshawan pointed out up-thread. Apple’s made lots of moves that frustrate pro users in recent years. Canceling Shake was a big one in the pro film industry. Apple preventing use of nvidia GPUs is an ongoing issue a lot of people I know care about. Personally, as a programmer who moved to macOS for it’s unix environment and needs some ability to maintain cross-platform compatibility, I am not able to continue because Apple has moved strongly toward Apple-only development, and the unix environment is frozen with decade-old licenses that will never resolve.