LMP1 has always been a low volume, Factory backed, big bucks effort. Given that Both Porsche and Audi are owned by the same parent company (VW Group), That parent company likely didn't need to see two of their top brands pitted against each other in the same class. VW Group Executive Management are really the ones who pulled the plug on the Audi Works Group, as Audi has dominated the LMP1 Class, for years and it stands to reason that they wanted Porsche to rise up. When the LMP1 Class left The American Le Mans Series after the merger with the Rolex Sports Car Series created what ultimately became the Weathertech Sportscar Series, the plug was pulled on LMP1 class, for all manufacturers. It would be a sad day for the entire LMP1 class to be pulled from WEC and Le Mans, but given Toyota's problems between last year and this year and the low volume of manufacturers participating in LMP1 Class, it's entirely possible that the LMP1 Class will go away. It happened to both the GT1 and GT2 Classes. We'll just have to wait and see. I hope LMP1 remains, but it could happen.