There are two problems with the money incentive.
The minor problem is that the best players are going to find this money less impactful relative to their salary, which means the players with the strongest incentive are those making the least money (usually: the least accomplished players). I don't think money incentives for team success really work.
The major problem:
For example: take 75% of all ticket sales and what the NFL gets from selling the TV rights and divide it among the 53 players of the winning team with the losing team getting only a $1000 each.
Why would the owners agree to accept only 25% of revenue for this game? It sets a terrible precedent (for them), and the owners care a lot more about precedents than they do about dollars.
P.S.
By my guesstimate the winner would get the equivalent of 4 or 5 game checks and the loser would get nothing.
NBCU
paid $100M for the 2023 Dolphins-Chiefs playoff game.
$100M x 75% = $75M, divided by 61 (53 man roster + 8 man practice squad) = $1.23M each.
Stafford just signed a 1yr/$55M deal, but we'll use his last deal which was $42M/yr. $42M / 18 weeks = $2.33M/wk.
In order for Stafford to make the equivalent of his
previous contract, this third place game would need to go for at LEAST $190M.
(And that's presuming all the coaches and support staff are working for free!)
Draft position is a much better incentive than cash.