Cost for 3 A list stars is $60m+. Dwayne Johnson is the highest paid actor and Gal Gadot is one of the highest paid actresses. Ryan Reynolds supposedly received $20m to be in the film.

Netflix knows how to waste money. Having one at that price tag would be typical with smaller salaries for the other roles.

That still doesn't change the definition of inflation. In a very oversimplified example, if Netflix costs $5 instead of $10/month those actors would be forced to accept $10m instead of $20m per movie.

They wouldn't be "forced" to accept anything, they just wouldn't do the deal in the first place, and would go to someone more willing to pay them the fee they want.

That's why I said "oversimplified". Is there someone willing to pay them more at the moment? Why not? Is $20m per actor a universal constant? That's how inflation works.