Here is mostly the hobby end which has a problem with innovation and has became stuck in the mud.
-
Last time I looked...
-
Stepper motors were all 200 steps/rev
-
There was no clear distinction between milling machines and wood routers.
-
Everybody was using antiquated MACH3 software that required a computer running Windows XP all to itself.
-
If you could come up with a tool bit that could chew through steel at enormous revs and feeds without benefit of flood coolant and without requiring much side support from above despite it's 6" shank... you would have a winner.
-
At the other end of the spectrum engineers will chose tooling by whatever has worked for them in the past.
-
When they have a problem first they will try resharpening old faithful more often while they will cast about for a miracle cure, hoping technology has moved on enough to save them.