Mac users pay for quality software. Linux users would never pay for anything. Windows users only pay for video games and corporate software if they're a corporation.
So that's why boutique software makers always focus on Mac first.
Well, paying money for consumer apps/services (besides games) has always seemed a bit more normalized in the iOS ecosystem, and I imagine it must be a _somewhat_ simpler interface than the lovecruftian monolith of windows-N
saying this as a Linux user, I've never owned an apple device in my life (nor do I want to)