Apple just launched their first Apple Silicon macs with the first M1 desktop processor.
It is a major change for Apple, the last time was in 2006 when they moved from IBM to Intel.
Anandtech has an in depth article on the A14 chip that they think will be at the base of the M1.
https://www.anandtech.com/show/16226/apple-silicon-m1-a14-deep-diveSome of the things they say:
Apple already is capable to make a chip as fast as the fastest current chip from Intel or AMD.
At the same time they need less energy to reach that goal.
Apples chips in the iphone made a 200% jump in performance during the last 5 years, while Intel made only a 28% jump.
Because of that Apple had simply no other option then to start using their own chips, or stay behind ( or go to AMD)
I foresee a big future for Apple produced chips - also for use in servercentra.
for us it is more a matter of how well non-Apple-software will run on it in emulation, during the first period.
And there will be glitches; i already read only one supported external screen can be attached...16gb ram internally.
In a few years it will be a mature system - the same with Big Sur.