Some actors and actresses that play roles in some famous tv-series and movies are paid with a very high amount of money. I agree with paying them well, but the amounts must be equivalent to the next reason.
The job of actors and actresses is hard and it is needed a lot of hours for learning the lines, for the filming of the movie and for the rehearsals. Also, the actor or actress must have the talent and play his roles well. Because of that, their salaries must be high, but it is better not to be excessive. The amount of money must be equivalent with the cost of production, (at the movies) the number of tickets and television viewing at the tv,( in series)television viewing, the talent and the role, and other reason.
The movies and series are a very popular kind of entertainment because a lot of actor/ess is very good.