I'd argue that NWA has been stealing concerts from the SW Mizz and Little Rock markets more than Tulsa market. The AMP has been getting some pretty amazing bookings the past few years.
LR gets plenty of gigs and has no viable amp for regular concerts. River Amp doesn't count. They get even more of the arena tours than Memphis. It, like Tulsa, benefits being fairly close to another major city whose arena has a NBA team as a permanent tenent. They are much more flexible for booking purposes. For crying out load Tulsa has landed Rogers Waters twice. As the U of M football teams continues its rise to respectably, hopefully Memphis can come up with a downtown. stadium that is right sized at about 55,000 with the idea of concerts and NCAA tourny basketball in mind. Ten thousand of those would be a upper level that would professionally designed to stay hidden unless needed, like for the Liberty Bowl.
They already know that they built the amp too small, needed more fixed seats and be 10,000 with lawn seating
The plan is that after the end zone is done, Bud Walton gets a major redo. Like a new outer concourse and parts of the old converted to club areas, a net decrease in capacity with added loge seating in certain areas, new back of house areas and expanded docking, so that it becomes the arena of the area for larger concerts. Supposedly the Walton Art Center(walmart) will be in charge of booking. They are the ones booking the AMP. After that, the Uof A will build a new smaller arena to replace Barnhill for gymnastics and such and will be multipurpose as well.