If you look at what Martyn Ashton is doing in the UK, he's still fairly popular in the trials world even though he very rarely competes. He does a lot of demos, and runs his bike company but still manages to maintain a high profile even though in terms of riding he's not pushing the envelope as much as some other people (See Danny Mac).
Ryan obviously has his niche doing these super-technical shore-style lines and since he's about the only person doing it to that level, I reckon he'll be around for a while doing his thing. He's sort of forced to limit himself to "mountain bikes" because Norco don't really make a proper trials bike. My impression is that they're not interested in actually supporting trials, they only have a trials rider on the team to do shows and promote the Norco brand to the much wider MTB audience. Kids that see the demo are going to go out and buy a cheap Norco hardtail - They're not going to spank 2-3 grand on a trials bike.
Nice Evolve pun by the way - not sure if that was intentional :P