I agree that the production value for TV shows is insanely good now, it must cost them a small fortune. I don’t know how they are keeping the budgets lower than their movie equivalents or perhaps maybe I don’t know how movies justify their budgets given the quality of modern day tv series.
They aren't necessarily. Rings of Power season one had a budget of almost $500 million. That's almost 3x what Top Gun: Maverick cost and twice what Black Panther: Wakanda Forever cost. (Yes, it's more hours of content but it's still in the neighborhood of blockbuster movie budgets.)