http://united.aero/
http://unitedairlines.aero/
http://american.aero/ <-- not american airlines
http://americanairlines.aero/ same as above
Delta did buy a .aero and forwards it to their .com...
As you can see if everyone says fuck that it ain't going to fly and will be a novelty item.
Stick to your .com's... The gov't isn't going to force you into a sponsored TLD. They can't as you have free speech. It ain't going anywhere people!