And perhaps it was really due to the big money in the table for the two of them that they can't resists.
Very interesting as well to note that two of the biggest fight for this year comes from PBC.
The hype they created had really made the fight more profitable. That particular fight was rumored many times before it finally happened, so when it became official, people were happy, and they eagerly booked the fight. The revenue was good, but the fight was supposed to be a close one, so they would make the fans want to see more, like a rematch. Unfortunately for Spence, he looked unprepared during the fight as his game plan didn't work against a faster and probably stronger Crawford.
That's one of the reasons, but even if they didn't hype the fight that much, people would still watch it since it's an undisputed fight, and the winner will make history. It was a success, although it's not the biggest in terms of revenue (gate entrance and PPV), because the fans who watched were satisfied.
Usually, when the favorite to win actually wins the fight, that also makes the majority of the fans happy.
I'm sure Spence's career is not over yet; he can still fight, so let's wait for his next move. If I were to be asked, I would like him to move up and forget his losses to Crawford. A new weight class means new challenges for him, and I think he will be more comfortable in a heavier division.