> Apple users seem far more willing to pay for small useful applications from indie developers so more indie developers put more effort into producing small useful and beautiful apps for Mac.

This rings true to me as well, but why is this the case? If we roughly assume that Mac users are 1 order of magnitude fewer than Windows users, they must be >1 OOM more likely to pay for these kinds of apps to generate this impression.

I struggled with this puzzle for quite a while when I switched from Mac to Windows. Utilities are simply not comparable, either in design, functionality, or simple quantity, for a market which is (on paper) both much larger and much older (if you restrict your view to the OS X era).

As an aside, it totally makes sense to me why Linux utilities are numerous and awesome, but have (usually) poor graphic design, because that Bauhaus-esque function over form describes how I prefer to work, too.