The entertainment industry will keep pumping out things that are hits with the viewing public. If ratings go down they will cancel the show.
Older men are less vested in relationships between women of their age dating younger men. However there are some older women who resent old men and younger women coupling up. A lot of older women don't feel comfortable dating men 10-20 years or more their junior.
Hugh Hefner the founder of Playboy Magazine was 86 when he married his most recent bride who was 26 at the time.
I can't imagine too many 26 year old guys pursing an 86 year old woman no matter how rich or famous she is. Guys look to women more for their beauty than their financial security.