One reason for the drop is obvious: With productions shut down, new seasons could not be completed in time. But there was another reason, executives and agents said. When filming resumed, extensive safety protocols for actors and crews added roughly 30 percent to most production budgets, said Chris Silbermann, the chief executive of ICM Partners, a major Hollywood talent agency.“Everyone saw these costs pulling through the system and realized, ‘Oh, no, we’re going to have to do less,’” Mr. Silbermann said. “Stuff that was on the bubble, a lot of that stuff just went away.”The slowdown also meant …
