If that were true then why don't Red Bull or Mercedes have LMH teams in the WEC series? Surely, they would want to use all that data to improve their F1 cars, r

If that were true then why don't Red Bull or Mercedes have LMH teams in the WEC series? Surely, they would want to use all that data to improve their F1 cars, right? Or is it because they all know, including Ferrari, that there is very little correlation between an F1 car and a LMH car.