Could there be an inverse sort of relationship with souring economy, and production of good public courses?
There were several public courses built by architects who were out of private client work, and took up assignments for the WPA during the depression.
Could the next best business model not be a highly profitable motive driven private developer model, where instead, communities find usable land and promote community projects like either public works or a collaboration of a private concessionaire to take a long term lease on a course funded by local or state governments? Isn't the RTJ trail something like that?
I don't think the long term prospects of private, costly, and exclusive golf development is a lively proposition. I think that if the game grows, it will grow in the public recreational golfer sector. The entire industry, including ball and impliment makers would need to dial costs down, make golf more affordable and thus grow the market, or watch it die of old age and rising costs beyond a market that will continue to support it.
All this is merely a hip shot and conjecture, of course...