Actually it makes perfect sense to me that the Bills (and the Bengals) would disent. In fact, Wilson and company suffer from the Jets and Giants getting a new stadium. The Bills are one of the lowest revenue teams in the league in part that they don't own their stadium, there is not a large enough fan base in Buffalo, and Wilson refuses to do revenue generating things like selling the naming rights to the stadium.
This stadium will give the Giants and in particular the Jets a lot more revenue streams from luxary boxes and club seats. Right now the Jets get little revenue because they lease the stadium from the Giants. This new stadium will further separate the big market teams to the small market (and in the Bills and Bengals' case non-marketing savvy teams). This new stadium is making it more and more likely that the Bills relocate in the next five to ten years.
Wilson is still living in the 60s and 70s when it comes to running a team. He refuses to sell the naming rights for the stadium out of principle and then expects the league to help keep his team finanicially running. He will never build a new stadium because Buffalo doesn't have the fan base to afford to build a state of the art stadium. Heck, Wilson doesn't even want to buy the current stadium from the local government.