It's not how much you pay a guy it's a question of how much you pay someone relative to what they are worth.
BTW you're exaggerating greatly how many teams will be paying their qbs this much money. There are 4 guys there now. Dak would make 5. What 11 qbs are going to reset higher than Dak in the next 2 years?
June 22nd, 2017. It is announced that Derek Carr has signed a deal averaging 25M/YR and is now the highest paid in the league.
About 2 years and 1 month later, 8 guys are ahead of him. 6 are averaging 30M or more, counting Brady.
8 guys jumped the 25M hurdle in 2 years, a time period that began with the market being set at 25M/YR by Derek Carr.
The current market is set at 35M/YR by R. Wilson. 6 are already above 30M/YR, counting Brady. Heck yes I believe 10 QBs can make this jump if 8 QBs cleared that bigger one. They can be 5M short of setting the current market and still be above 30M.
Put another way, 20M was 5M less than the market setting contract in 2017. There are currently 18 people over that mark. 16 people are at 21M or more in 2 years since the market set to 25M.
Who are they gonna be? There's some obvious options like Maholmes but there's gonna be several flashes in the pan getting dumb deals that we cant predict. I wouldnt have predicted 27.5 for Garoppolo or 28 for Cousins.
I'm not saying I like it, but face it, this is how the modern NFL works.
https://overthecap.com/position/quarterback/