[mcrdev]

I don't think the average viewers care if the set is real or not and it's worked fine for 20 years.

My guess is that when the technology becomes cheaper, we'll probably see green screen replaced with the LED screens they use for The Mandalorian.

The technology is exactly the same as used in green screen virtual sets.

LED screen environments have the problem that every camera has the same background - fine for single camera drama, less so for multicamera live.  Sure, you can switch the background when you cut camera (with the associated jump in perspective for people in the space), but you can't mix between two shots and you can't reliably frame or preview shots.

The big advantage of LED spaces is that the lighting feels right, as the space is then partly lit by the environment, enhancing the realism - something which isn't high up on the list of requirements for a news studio.