Heh, heh........uh, they just had to use the Alien franchise as one of the negative examples......
Barna William Donovan at the Department of Communication and Media Culture at Saint Peter's University said alienating fans could indeed put the franchise in danger as a commercial force.
"If audiences are left as angry once the final episode [Game of Thrones] has aired as they are now, any future plans for spinoffs and DVD sales could very well be in jeopardy," he said. "Fan communities do not like to be let down by long-running franchises, and they have often shown that they are willing to walk away from entertainment that disappoints them."
The numbers show that fans will eventually tune out a franchise if it disappoints them enough. 1979′s "Alien" was a surprise hit that grossed $283 million at the domestic box office after adjusting for inflation, but the franchise bottomed out with 2007′s "Aliens Vs. Predator - Requiem " faring the worst at $53 million after inflation.
https://www.cnbc.com/2019/05/19/game-of-thrones-fans-are-angry-about-the-final-season-and-the-franchise-could-suffer-for-it.html