Worth it for the prestige and the pride of accomplishment? Definitely.
Financially though, not really. The winner gets 10.5m, the losing finalist gets 6.5m. If they were to play Curtois and win it, they'd end up just 1m richer than not playing him at all and losing. If they play him and lose, they'll end up with just 3.5m to take home.
Would they stand a better chance of winning it if they play him though?