This is an interesting theory to play around with. If you look at the regional revenues listed on Bayer's site[0] North America accounts for €15.1 billion of revenue, while Europe/Middle East/Africa accounts for only €13.2 billion and Asia/Pacific €8.6 billion. That is quite the gap which could be caused by high US prices, but it warrants a look into the industry's financials.
[0] https://www.bayer.com/en/worldwide/bayer-worldwide