Then Apple does the above. Cost saving for them yes but for Apple users NO! Consider once Apple starts to roll out the ARM architecture on laptops and desktops the support for the x86 will dry up. Apple must force users to ditch their x86 hardware in favor of the ARM, so it is only logical Apple will stop the support and perhaps even cause issues with the iOS on x86. Keep in mind Apple is the great denier of unjust action on their part they have a long history of it.
What is more, all existing software for the x86 systems will not run on the ARM systems, so users will be forced to buy a new system as well as new software.
Now here is my question. A company running 200 x86 Apple systems in 2020, will they seriously invest tens of thousands of dollars not to upgrade but buy entirely new systems and software? Some may but I do not foresee all of them doing so. Non-profit org will not be able to justify the purchase.
With Windows 10 being stable and Microsoft firm about no more major changes I believe most companies will change to a stable system, Windows 10 and this move that Apple is making from x86 to ARM will be their own undoing.