My understanding is first, not computing the crosswind effect means sveryone’s take-off numbers look better, both in the marketing brochures and in the computations. Second, the FAA was convinced by the manufacturers that the chances any engine failure near a minimum speed scheduled take-off (V1 or Vref near Vmcg) AND having a crosswind strong enough to be a factor AND on the upwind was pretty low. Which then brings up the question why do we spend so much sim time doing V1 cuts when statistically they are low probability hazard?

GF