We're about to learn a valuable lesson. Incentives aren't everything and the bigger the package, the less sustainable. CVG may be slow but it's a proven market with a larger PDEW that once had service to London during its Delta hub heyday, AA is heavily investing and is overall underserved. BA may not want to experiment with untested markets but doesn't want to fight with Delta in a larger market like MSP, DTW or SLC.
However, each new BA destination added that isn't KC reduces our chances of ever landing a TATL. LH likely won't come here, Condor is giving up on mid sized markets, Aer Lingus doesn't have planes with enough range and Delta seems to have lost interest in point-to-point service. There are only so many US cities that can support TATL and KC is nearly at the bottom of the barrel. Where's the cut off? The window is slowly closing and we REALLY need to go hard in attracting BA in 2023/24.
Wildcard is that Virgin Atlantic goes full steam with their expansion plans and perhaps one day adds KC (by the 2030s)