I've had a few European teammates, and they usually come to the U.S. because they can make 3-5x what they could in Europe. You'll see that a lot in HN comments, where people talk about USD$400K FAANG compensation and European developers will be like "Dang, WTF, I'm just sitting here with my €70K salary".
Right now, going into a bust, everybody wants downside protection. You often make more over the long-term accepting some risk to pick the upside when it's available, though.