Before a moderator or an editor closes, locks, or deletes this post, he or she should first read and then research what I am about to write.
The first thing you need to know is that the two systems are software and not hardware. Second, both use the same CPU architecture, Third, fewer drivers are available for Mac OS while Windows has almost everyone that there is. Fourth, resizing partitions will not damage data if it is done properly. And finally, the user has rights.
Neither Apple nor Microsoft develop hardware, they buy it and develop applications for it. If you want both in one, go for HP's PA-RISC and ARM's Arm9 and above.
Apple switched over, this has already been discussed.
Drivers are written, bought, or reverse engineered. This is a fact.
The disk is made empty. You add an operating system and you can resize or remove it.
The consumer has rights that he/she should look up in their local, state/ provincial laws. What a person decides to do is up to them, don't hold their hand.
Getting one x86 system to run on another x86 box isn't a challenge. having Windows run on a computer with a PPC CPU would be.
You can run both on the same with dual booting.