How often have you helped a friend by coding a patch for their Linux kernel? Why do you think you would do so more for some random iOS app if you were allowed t

How often have you helped a friend by coding a patch for their Linux kernel? Why do you think you would do so more for some random iOS app if you were allowed to? Software "maintenance" is just extremely hard compared to mechanical maintenance, so all of these arguments fall flat when confronted with any significantly-sized code base. I'm putting maintenance in quotes for software because that is not what is actually required here. Fixing bugs is not actually equivalent to repairing a physical device. It is equivalent to repairing a design flaw in such a device. Which is of course also way beyond any repair service's abilities beyond the simplest flaws.