I wonder if people will drop Photoshop from their list of deficiencies when the topic Tablet vs. PC comes up. Often, some people bring up the lack of productivity tools like PS, X_Cad, writing and building code etc.
It's wonderful that Reaper has a native Linux version! I might just go with Linux when I have the means to build a dedicated mixing and mastering computer, though I'll miss the ease and quality of SerumFX. Unfortunately, few VST developers have taken advantage of the new Linux support in the VST SDK. And then there's Ableton Live. All of it runs on Windows and Mac. None of it is likely to see an iOS port.
I need my whole workflow to come along. None of it is trivially replaced.
Or one could not use it at all.
As far as app support, you act as if iOS is some backwood platform without robust third party support.
I know perfectly well what iOS provides for IPC and it is insufficient for big-boy tasks. I mean, for real: are you going to throw a 16K image with 20-100 layers across heckin' x-callback-url every every time the user makes a change because you want to recompute a layer transform? Do you want it to come back before you die of old age? Or is it actually that, no, this isn't for for-realsies work, this is for the kind of dabbler who won't notice that, and for-realsies work should stay on a Mac until they kill it and we go back to Windows and Linux?
And please don't get me wrong: I'm acting as if the plugins that big-boy apps host are sometimes a decade old and are effectively out of support, because nothing in the Photoshop (or, indeed, most production) universe dies unless, well, Apple kills it. It's even more common for Office plugins and, as mentioned by another poster, it's literally more common than not for audio apps. (Gonna replace VSTs with x-callback-url? We binary-bolt this stuff together because a millisecond is a long time, remember...)