Many of the teams had valid reasons to move but many of the mentioned teams had so much history and a strong brand even if they didn't bring in fans (for example the Expos). I thought about listing the Cardinals but I kind of shrugged my shoulders at how much out of state fans cared. They were always kind of bad and afterthoughts in the NFL. The Oilers were kind of fringy also. More obvious examples of this are the Grizzlies, Clippers, Raiders (moving back and forth in CA) and the Rams (both moves).