What is worthy for A listers?

Since 2007-2008 TV has evolved exponentially. What used to be cinema’s little brother, has now become a top contender against the industry. In the old days, A list actors and actresses thought it was shameful to move from the big screen to the silver screen, normally, it was the other way around. Nowadays, we see big actors on the little screen. For example: Tom Hiddleston in The Night Manager, or Eva Green in Penny Dreadful, or Matthew McConaughey in True Detective. Can an A list actor or actress maintain their "tittle" even if they switch from movies to TV? Are there more opportunities on TV than in the film industry? Which one grants the most financial stability? Is it the quality of the shows or the networks behind them that attract the talent?