ProTools was quite simple in the old days and appealed to guys who grew up with traditional recording equipment - it has become the default almost by accident - it has got some nice features but is still very clunky in some areas - it will be the standard until the older pre-computer literate producers die off simply because it’s the tool they know. Younger users are more likely to be able to switch to and adopt different tools as and when required. Of course as computers evolve who’s to say a DAW will still be the heart of an average studio in 20 years time or that traditional big-buck studios will still be required? The DAW might become almost incidental - a way of mixing music into the cloud for consumption which was produced on another platform and no more. I suspect most mixing duties will be able to be performed by software soon - certainly to a standard acceptable to the average consumer.
You may end up with a tiny number of people in movie production suites etc still using DAWs but “pop” music production will break away into a million factions produced on the fly with smart devices. One thing that is for sure, the music industry has completely lost control of the music industry! People are now deciding what they want to listen to - not a bunch of old fat men in a boardroom. PS before anyone gets offended I am one of the old fat men who have been producing music for three decades - but not professionally. Pro Tools, Cubase, Reaper - they are ALL facing the same problem - this won’t be the way we’re making music for much longer - the next generation will decide how they want to make music - and I doubt it’ll be in a dark room twirling a mouse, staring at a screen.