What a bunch of malarkey.  For most of the year, Tour players do not play to empty stands.  WTA players make a rich living.  Before sponsorship, the top 20 make $1+ M a year.

To think today's tennis players come from country club's and are brats is a dis service.  Think Federer is a brat?  How about Raonic or Shapovalov or how about the long list of hard working professionals week in and out?  Who are brats again?

And to reference WTA tour players who can't even serve is a sexist, condescending, and insulting statement.  Temper tantrums?  Throwing matches?  Care to provide examples that illustrate a widespread issue as you have profiled above?