And what if he doesn't even play up to that 12th ranking this season, has an off year and struggles?
Then they're faced with either trying to get him cheaper or deciding to move on. That's the beauty of this one season, all of the options are still there.
And they've hired a QB guru type of HC so they already have the guy they would want to bring another QB along, in case they choose to go that route.
On one hand, it could cost them more money to keep Prescott but on the other, considering their history with finding QB's, better to be comfortable that the coaching staff feels he's the guy before going forward.
I really don't get this "the Joneses failed" thinking because they might have just ultimately succeeded, at least at that position.