Linux is not a good example, because many (most?) good programmers love their work and would do it without payment.
But this is not the case for many (most?) other workers - they would rather do something else and only work because they have to, or because their job pays better than other alternatives.
I think you're missing the point. That's only because other people aren't usually paid to do what they enjoy. However, most of them will have a passion like cooking, wood working, gardening, competitive video games, basketball, etc.
If money were such a strong motivator things like video games would be a lot less popular. Pickup basketball would be a lot less popular.
But this is not the case for many (most?) other workers - they would rather do something else and only work because they have to, or because their job pays better than other alternatives.