I think anything that generates excitement leads to more revenue, like in season ticket sales and merchandise. The Dodgers crazy spending made news everywhere for instance and that probably got regular people into looking at what was going on there. I think a condensed wild spending spree like that would get people talking. People go crazy for the nba free agency and it basically ends after a day or two.
But yeah it is definitely more leverage for the owners, would need a concession like a spending floor without a hard cap.