Are Hollywood blockbusters becoming stale?

Movies cost so much to make now Hollywood is afraid to take chances. If you don't have the twelve-year-old audience, you lose.

Becoming?!

King Arthur was a big hit

They're formulaic for a reason. As long as people keep going to them, and the formula works, there's no reason to change them. It's about minimizing financial risk. They'll change when people stop supporting them.

I think you're just noticing how they've always been.

No new stories to tell,

Eh yeah they are. I gave up watching movies already several years ago.