Happening all over the country where ever the airport has been taken over by "investors".
At Parafield rents have skyrocketed and continue to rise which means businesses have to raise their prices to cover costs. Customers then sell their aircraft or move the maintenance to regional centers (if they can) to keep it affordable. Business goes bust.
Same with parking/landing fees. 15 years ago you couldn't get a park on the hard stand unless you had contacts or influence. Most private aircraft were parked on the grass. Now....park where you want pretty much. If it wasn't for the college the tower would be closed.