CO can not be forced to move out of DEN Term A - but they might get a deal that makes it lucrative to move out.

UA is moving out - but got a deal - DIA building a $41.5M RJ facility at B + DIA will pay the remaining $110M debt on the unused automated baggage system. Then DIA does not have too spend more to build more gates for Frontier at A.

CO could choose to either get reduced gate fees at Term C (or by leasing A for a greater fee), get out of the PC space lease, or other items. DEN is not critical to CO - NW and DL are in Term C.

Yes Term A is closer - you can walk - do not need to take the train - but I still take the train - using the quicker main TSA checkpoint and when exiting - just take the elevator direct to the PC. But the PC is never that crowded - the bar area not that busy, etc. CO split the PC already - giving away the other half - I think BA and USO use the other part. Looks to me that there would be space in Term C in the upstairs area for a PC - or expansion to DL CRC.