If someone is to open a privatized disc golf course, they are obviously looking for a profit. How much of a profit are you actually going to make from disc golf alone? Be serious. The guys at Marshall Street have an awesome facility...but they also run the Christmas tree farm on the land as well. The "for-profit" courses may be a trend in the future but we are looking at an immense amount of baby steps between here and there. In my area of the country, if you went to a bank and asked for a small business loan to develop a piece of land for disc golf. You could even tell them that you wanted to build a clubhouse and have nice amenities and facilities...and they would laugh you out of every bank in this state. You could always invest your own funds but most disc golfers don't have a solid $250,000 just to throw into a course. (in Tennessee that will buy you around 5 acres with a little left over to build some type of clubhouse, and install the course) The problem is that investors expect a return, and building and running a disc golf course with the intent of earning a profit is not going to return the initial investment. Like the scenario above, how long would it take to recoup that $250,000? The answer is a long, long, long time...if ever. And I would place the probability of "if ever" better than 80%. I analyze these deals for a living and this is not going to attract any investors. Like I said before, I could care less if I have to pay-to-play occasionally, but disc golf is a long way from becoming a private sector money-maker.
One thing about the point on mini-golf...Mini golf is about $5-$7 per round, but if there were a free course down the street that was nice too, but maybe had one less "castle" or "clown-Mouth", everyone would go to the free one and the other would go out of business quickly. Disc golf is no different. It is easier to introduce newbies when it is free. The main thing that we all must understand is that we all love disc golf and we want the sport to grow. But we must also understand that disc-golf is not currently "mainstream". Until that happens, a true pay-to-play course will be difficult to operate or manage, and I don't see anyone ready to jump into that investment. I agree that some incredible courses and designs could be engineered, but it is highly unlikely at this time.
Also, we have hole sponsorships here for our local public-park courses and it works well. The have advertising signs beside the teepads.