alt Hacker NewsBecause it costs them money to maintain it, and they'll make more money when people upgrade to M series?
In all seriousness, it's a little lame. Consider that the Intel Mac Pro (2019 model) was still selling in 2023! That's not that long ago, and those were their highest end machines in terms of memory capacity. The "new" Mac Pro has since been discontinued...
Though buying a Mac Pro in 2023 would be a bit weird. The writing was on the wall. By that point the M1 was almost out for three years and even the Mac Studio with M1 Ultra had been out for a year.
(IMO it stopped making sense buying an Intel Mac after the M1 Air or if your want to be generous the M1 Pro/Max-based MacBook Pros.)