IF a flying school has had all the costs and hassle of compliance and then it is proposed that it was all unnecessary and anyone can do it without all that hassle (and obviously undercut them) then of course there was opposition to it, when people have invested so much. For much the same reasons as taxi drivers object to Uber.
Not all flying schools are a dying breed, and I disagree that vested interests are a bad thing that should be dismissed as just an annoying obstruction, but RA has certainly made things a lot harder.