Yes, it's pathetic as a professional sporting event to have the length and format of the tournament be dictated to them by the broadcasting company like this, but on the other hand the WPBA have been successfully producing and marketing their tour this way for longer than any other Pool organization in the USA and are still going.
I'm sure the players don't like it either, but it is better than the alternative, which is no TV and therefore even less sponsorship and press coverage. Since no other organization has managed to get anything like the coverage the WPBA gets on a consistent basis I really don't think anyone has the grounds to be critical. Clearly the WPBA willingness to compromise and accommodate ESPN is part of the reason for their success and whilst I'd love to see better quality tournament coverage (Perhaps a 2-hour special for final matches in a race to 11 format?) I certainly don't want to see the WPBA coverage disappear as a consequence.