It might be possible to turn a profit on Seminole Lake Gliderport, but other 'member owned commercial cooperatives' focus on operating a first-class recreational/educational resource and preserving it for future generations. 'Profits' are reinvested in upgrades to equipment and facilities, and fund a reserve fund to carry on operations in 'lean years' (at a loss).

https://www.madriverglen.com/about-the-co-op/ comes to mind.

Non-profit Soaring clubs that own their airports have similar goals.