You have it backwards, what is preventing you from selling your software is Apple, not the GPL. Also, you might want to think about what the fact that Apple's software on your customers' devices can prevent you from selling GPLed software to your customers has to do with the freedoms that the FSF is advocating for.
And yeah, as I wrote, the GPL limits some business models, but that's a long way from "software that I can't sell". Locking in your customers is not an option, and that is essentially the whole point of Free Software, rather than missing the point, while being free of cost is not even a goal of RMS/the FSF.
And yeah, as I wrote, the GPL limits some business models, but that's a long way from "software that I can't sell". Locking in your customers is not an option, and that is essentially the whole point of Free Software, rather than missing the point, while being free of cost is not even a goal of RMS/the FSF.