Toward the end, even with great actors and great cgi effect. They can't keep selling dick and balls jokes. Do you think the MCU just started great? Do you know how many failing superheroes from DC and Marvel for them to get here? And even then they are going out of steam as they over saturated the market. Post season 5. Season 6 and 7 of Game of Thrones are beloved by mainstream fans prior to season 8. But book fans absolutely hate it. The mainstream fans like the battles, like the dicks and balls jokes. Where as book fans got annoyed with all the nuances eliminated. But what matter is the audience kept growing.
en.wikipedia.org
en.wikipedia.org
For every the Dark Knight, there is Catwoman. For every Joker, there is Green Latern. For every Endgame, there is Ang Lee Hulk.
And that is films, and not touch in the numerous tv shows. Even within the MCU that isn't the Disney Plus era. We got Iron Fist, Helstrom, the Inhumans. Heck even lower budget very beloved show the Flash. Now, everyone look back at it and nitpick the hell out of its logic.
Lord of the Rings are exceptional for its time. But how about the countless fantasy shows and movies that follow? Prior to Game of Thrones and post Game of Thrones. Wheel of Time and Witcher dividing the fandom. Eragon, Percy Jackson, Animorphs, Cirque Du Freak.
When you talk about prescription. There must be a problem. And often, the quality isn't the problem. The problem is profit. Twilight series are objectively pretty bad. Whether it is book or movies. But as long as it make 7x its budget. Studios are happy.
The topic is profit for studios, and making products that consumers will consumes. Here are my problems with One Piece
1) One Piece is niche. Even when it toned down, it is still too cartoonish for mainstream folks to even give it a chance.
2) The nature of fandom. This fandom are already very well trained in consuming non official sources whether it is manga/anime. Even if the crowd that like the Live Action, many are pirating it.
3) This fandom love REACTION channels. And there are so many of them. These reaction channels really hurt repeated viewings.
Combined with budget and other stuffs.
The fact that you bring up Game of Thrones, LOTR, and MCU. I think those are either super exceptional. And or actively hurting the genre. People said the middle budget tv shows and movies are going away. And the system cannot keep up with high budget shows and movies. You know that super campy Batman tv show back in the day with terrible acting and cheap props. Those are super more successful in term of viewership (viewership share of total viewership) and how much profit it generate than said a high budget Loki/Wandavision.