Every company is different in how much new technology they absorb. (And when they choose to do so.)
Our MRP/ERP system is about twenty years old and restricted to our LAN.

MRP/ERP systems have advanced a lot in that time.
Many can now be accessed through as browser from anywhere in the world.
Some are cloud based relieving you of maintenance issues.

Machine shops have a long tradition of using thirty year old equipment as new machining tools are prohibitively expensive.
This drives what hardware and software they purchase and maintain.

I agree with FD. It is not all black and white. Not everyone is ready to chuck their Windows based tools.

I agree with FD