Gary, next time engage your thinking cap before your search engine.

We all know that Windows is a copyrighted proprietary product of Microsoft. Your long diatribe on that obvious point makes it even more painfully clear that you missed the entire point of his post.

Windows will run on a HUGE range and combination of computers, parts, peripherals. Apply a little combinatorial math and the possibilities are mind boggling.

Macs cannot even come close. They had a chance once upon a time and then they killed Power Computing.