Originally Posted by Baradium

JetBlue's scope is a poison pill for most acquisition concerns. While they may be able to buy their way out of it, it makes a potential acquisition a lot more expensive and potentially a lot more difficult for management if UAL pilots (who care much more about scope than AS pilots seem to) decide to use to opportunity to go for a return of scope on their end.

While it doesn't completely rule it out, it does make it much less likely.