Jason Momoa played Khal Drogo in Game of Thrones. Jason Momoa will play Arthur Curry in the Justice League movie and will star in the Aquaman movie.
Even Melissa Benoist (Supergirl) has had important roles in movies like Patriot's Day, Band of Robbers, and Low Riders, and has gotten critical praise for her performance.
Valid point - I would actually say any HBO actors could carry a top movie for the most part...especially from GoT..they just don't seem to take big blockbuster roles very often.
And most times they are in the movies, they do well, just the movie it self sucks (terminator).
I'll give some context to my sucks.
In the entire 3 seasons of the flash, I haven't once had a moment where I've felt "Damn, this is the face of Barry Allen" It still feels like "This is a tv show about the flash, and these are the actors portraying the characters"
And keep in mind Im a big fan of the CW shows and can appreciate what they try to do, but I still understand the execution and range of emotion, writing etc, it just isn't there in the CW.
Theirs been like 3-4 actors who have really stood out to me on that show Dolph Lundgren, Matt Ryan, Tom Cavanagh.
All who imo could be a great supporting cast member of any DCEU film, but couldn't carry, (Dolph I do realize is making it in Aquaman.)
The rest - give very unmemorable performances, Grant Gustin doesn't ever feel like he's genuinely struggled, and when has to show these performances, they aren't cringeworthy, but they aren't believable, Amell has the same problem, it's almost like these guys don't get angry in real-life anymore, so they don't know what that emotion actually feels like to portray.
It makes them much better human beings, but hurts their ability to act.