There's plenty of reason to use Windows apart from Office. You just can't see it because you live in a bubble.
Businesses aren't going to switch to Linux on the desktop anytime this decade or the next because there is very little expertise to be hired and they're not going to buy into Apple's hardware lock-in either for obvious reasons. Consumers aren't going to buy Linux unless it comes pre-installed from a major manufacturer. Even then (we've tried that experiment before) - they still don't buy. Some of them might buy Macs, but the majority certainly won't because they're more expensive and completely unnecessary since Windows already does everything they need.
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There's plenty of reason to use Windows apart from Office. You just can't see it because you live in a bubble.
Businesses aren't going to switch to Linux on the desktop anytime this decade or the next because there is very little expertise to be hired and they're not going to buy into Apple's hardware lock-in either for obvious reasons. Consumers aren't going to buy Linux unless it comes pre-installed from a major manufacturer. Even then (we've tried that experiment before) - they still don't buy. Some of them might buy Macs, but the majority certainly won't because they're more expensive and completely unnecessary since Windows already does everything they need.