It will be partially because you can't pay one player like that and be a consistently great team, unless you have a Patrick Mahomes -- then you might have a chance. D. Watson is not P. Mahomes. If the Bills ever pay Allen like this, unless he has risen to Mahomes' level, my expectations of the team will necessarily go way down.
You would be better off building a great team and going through QBs on rookie contracts for 5 years each. Draft one every 3-4 years and let him develop until you let the old one walk. Some team is going to try this one day.