A clear owner and authority on the course helps settle disputes and matters of etiquette. I consider myself a rec player, but I caddied 9 years of my youth at a bluecollar private golf club. (The members built the clubhouse themselves. No pool, no tennis course, no 5 star kitchen. Member's money was spent making the nicest course possible.) I don't like playing a group with barefoot, shirtless guys with their underwear hanging out. I also don't care for dealing with random pedestrians and leashless dogs who can't leave a disc alone. It'd be nice to not worry about chuckers and newbies who wreck things and act like punks in general. I would gladly pay $5 for 18 holes of resonably well maintained holes and etiquette standards. If people want the sport to be recognized and respected in the public eye, pay to play is the future.
Free courses, on the other hand, absolutely must be promoted and developed as well. We will not continue to grow the sport without the easy access and exposure free courses provide. They should be 'learner's courses' which will not frustrate new players with deep rough and excessive water. They should provide enough challenge as to help new players develop the skills needed to not be intimidated by a more difficult pay to play course, but without as much risk of losing discs.
If you ever want to see a disc golf tourney on daytime major TV, we have to develop many Pebble Beach caliber courses. Courses with challenge, and views beautiful enough to hold the eye. Public park budgets won't get us there. Private courses might after many years of operation and development. Of course, the viewer would need to be able to appreciate a pro's shot. Much like watching ball golf, this requires the viewer to have personal experience and a frame of reference. You won't have that without free courses and cheap discs.