It's actually a very simple psychological hurdle for them to have leapt mate,
Having advertised here for students over many years the big, residential schools know that public access machines are locked into PPRuNe - it's right in front of their eyes. I've found this at every school I've visited. In truth the place we are weakest is within the FBO/Bizjet world as I pass through and inspect the bookmarks
It's folks like those at Nottingham's Truman that made the leap of faith last year and included an intructor ad as part of their general promotion. They paved the way.
Rob