Perhaps they will resume AUS/SEA service catering to the tech community and going head to head with DL and ASA. Something forced AA to reenter the P2P game.
Even though WN dropped AUS-SEA nonstop service almost 2 years ago, WN re-adding AUS-SEA nonstop service is a possibility since
(a) SEA is one of the top destinations that WN doesn't currently serve nonstop from AUS,
(b) SEA is a top business destination for AUS-based technology companies,
(c) WN now has more gate space at AUS than it did when it dropped SEA-AUS nonstop service,
(d) WN was able to fill AUS-SEA nonstop flights back in 2017 as WN had an average load factor of 86.06% on AUS-SEA in 2017.
WN re-adding AUS-SEA nonstop service would also allow WN to defend market share against DL and AA in the AUS market.
I agree that AA adding AUS-SEA nonstop service is also a possibility since
(a) AA would be able to capture some of the AUS to SEA tech traffic by adding AUS-SEA nonstop service,
(b) AA would be able to offer connections onto AS, CX, and JL flights at SEA (and vice versa) if it adds AUS-SEA nonstop service,
(c) AA would be able to capture some of the AA FF's in the AUS market who would otherwise be flying to SEA on AS or DL if it adds AUS-SEA nonstop service.