Yup. Limit is 12 hours. For every soul playing. There's a few other limitations, as well. Gotta spend perks for some rides. If someone decides that one of those rides is the only way they can have fun, well, they have to suffer flying something else until they build up perks. If they blow those perks then they .... gotta start over. Oh the grind. If they've built the perks then, gawsh, there must have been other planes they managed to fly (and maybe even enjoy).
By and large, this game was designed with a lot of factors figured in. And players, the way they play, what they play .... are factored in. And .... being an interactive game (an MMO, if you will) there will be some limits for the good of all (yeah, it really isn't all about just us, as individuals, no matter how many waive their wallets and demand changes just to suit themselves). Those players that have unrealistic expectations/desires because they only want to fly one specific low eny plane and they don't want to switch sides and they don't want to fly events and ... and ....
Here's idea. If a player only likes the bubble around themselves to be a certain way there may be a good dozen or so offline dog-fighting games that'll cater to that. If a player likes AH, an online dog-fighting MMO with settings and limits that apply to all, then by cawd like AH and play the game.