I really think the hand writing is on the wall. It has been going on for nearly 20 years. Mainline carriers want the ultra long routes and high capacity routes. Shorter haul and less profitable routes even in the 70 to 80 seat range they have and will give up to the JET airlines like RAH and EXJet et cet. The public wants frequency all day long..and the only way the companies can provide that is filling in with flying in that range. The bar has been continuously raised for years what the smaller carriers can code share and fly and I think it will continue that way. the Legacys want MORE intl and long haul ....... it is what it is..... the business model is out there and its probably not changing anytime soon....