5 Reasons why an injured Seth Rollins beat Brock Lesnar clean at WWE SummerSlam 2019

#4. Heyman wants a full-time Champion

Man meets MACHINE. #SummerSlam #UniversalTitle @WWERollins @BrockLesnar @HeymanHustle pic.twitter.com/6jzbg1rlBI

— WWE SummerSlam (@SummerSlam) August 12, 2019

As reported by Tom Colohue of Sportskeeda, Paul Heyman didn't want Lesnar to beat Seth Rollins:

At this point, Vince McMahon is not in charge of the direction of this particular feud. Paul Heyman is in charge of RAW now. Paul Heyman knows that you can't have someone vanishing with the title so long. He's seen it, he's seen the effect of it.

Colohue believes that Brock Lesnar is a wild card, whose future depends on how much Vince McMahon is willing to spend. Which is why he wants his own stars to be over:

You have got to remember, yes, Brock and Heyman have been paired up for a long time, but it was not Paul Heyman's decision to be paired up with Brock Lesnar again. It was a collective creative decision. Yes, Heyman has been involved quite a lot in this regard, he was, for example, one of the main voices for Finn Balor to be working with Lesnar at the Royal Rumble. Heyman wants to work with what he has. There are no guarantees that he has Brock Lesnar because that's down to Vince McMahon putting his hand in his pocket. You cannot just go to Vince and say, 'I want Brock this week, this week, this week, and this week.' It's not going to happen.

With Heyman at the helm, it was clear that this title change wouldn't happen at SummerSlam.