ggg needs Canelo, not the other way around.

[M Bison]

And if Canelo makes him an offer at catchweight for the highest purse ggg has ever made, what would that be classified as?

Greed is the root to all evil and you're justifying it with this comment, Canelo will earn HUGE money for fight Golovkin.
Money or PPV drawing power isn't the issue IF it was all this time he wouldn't have fought Lara or Trout.