See also Joel Sposky’s take on the economics of open source software: https://www.joelonsoftware.com/2002/06/12/strategy-letter-v/
easy for software to commoditize hardware... hard for hardware to commoditize software. (Spolsky 2002)
Linus effectively killed the golden goose of writing OSs, a super-difficult task that deservedly propelled Gates and Allen to the stars.
All it takes is a college kid and a laptop to ship software. I wouldn't know where to start building and shipping chips and circuit boards. And that's why Azure, not Office, is where Microsoft's placing its bets.