"I don't know, maybe because bow is a peasants' weapon, and France had knigts?" If you read the abstract (I'm not saying you didn't), you'll see that this is w

"I don't know, maybe because bow is a peasants' weapon, and France had knigts?" If you read the abstract (I'm not saying you didn't), you'll see that this is what they are saying. The TL;DR version is that using longbows meant training peasants, which will pose internal security problems. England was more stable at this time so it was less dangerous for them to train peasants to fight.