There's a gulf between casual rounds of golf and tournament golf. In my experience, organized tournament golf even down to the amateur and junior level is really quite similar to the spirit of a PGA tournament. Walking only, no distance aids, etc.
With that said, that's also why I don't particularly worry about bifurcation if it does happen. Most weekend warriors don't fancy themselves to be pros. They'll hit their Top Flites and play with whatever clubs they want, ignoring and creating rules here and there to fit their needs. More serious players, or those who fancy themselves to be anyway, can play with a tournament ball if they think they'll one day have to use it in some qualifying event, and they'll continue to putt everything out, count their clubs in the parking lot, etc. It actually works well as a very diverse game.