Tedesco may have taken less money to go to Easts, but you're kidding yourself if you don't think there weren't other inducements that the NRL don't know about. There is no way Easts have been able to stack their roster the way they have over the years and remained under the cap without outside help.
Wasting years of promise at this club was probably also a big motivator. As much as I hate them for leaving, their decisions were vindicated. Woods went on to play finals at Cronulla three years in a row, Moses has played in several finals series and made a GF, and Tedesco won two rings at Easts. Even Brooks has played a finals series at Manly.
They probably took a look at Rowdy and thought "nope, not letting that happen to me."