Most people are unable to administrate their own systems, therefore GNU/Linux–an operating system built on empowering developers and administrators–is basically unimaginable.
Microsoft and Apple have co-opted the admin duties for users, and that’s why people use their operating systems. It spares them from the disaster we all saw and experienced in the Window XP days–but that comes at a price.
It’s not software support, it’s not anythign to do with Linux. It’s a computer illiteracy problem.
Android could, in some respects, be considered linux’s biggest success story among regular users and that’s because Google co-opts admin duties.