We know of cases where the established Avgas suppliers, in particular Titan and AVFuel, have threatened FBOs to pull supply of Avgas if they brought mogas onto the field. In some cases, they claimed mogas was not a legal fuel, preying on the ignorance of airport managers. Another bogus argument against it was the lack of ethanol-free fuel, which is total nonsense. Pure-Gas.org shows tens of thousands of sellers. All fuel terminals have ethanol-free gasoline since ethanol may not be pumped through underground pipelines due to it being highly corrosive. Then there is the argument of the expense of a 3rd fuel tank, also baloney, since there are many low-cost systems available, see Ufuel.com. Airports could also welcome private investors to install and operate the system, in exchange for a cut of the revenue. Until any of this happens, more aircraft owners will self-fuel, meaning airports will collect exactly zero in aviation fuel taxes. Better yet for pilots, in some states such as mine (NC), the department of revenue will reimburse you 100% of state highway fuel taxes for mogas purchased for an airplane. In NC, all I have to do is fill out a single page form. They do not even require to see receipts, which I keep of course in case of an audit. There are a lot of very stupid people in the aviation industry. Sport Aircraft owners however will do what it takes to keep things affordable, and no airport can stop this. With a few acres of cleared land, nearly anyone can make his own airfield.