"I don't think that this is accurate. I think there are many highly regarded "movie actors" who come back to do TV. Just off the top of my head, Gary Sinise, Jeff Goldblum, Vincent D'Nofrio(I think I got the name wrong), Holly Hunter... "
Sure. They come back to TV after their star has faded.
It's been a long time since Gary Sinise was in Forrest Gump and Jeff Goldblum was in Jurassic Park.