It's complicated. I think they would love to, but many don't understand french unless it's perfect, and they can get upset about faux pas made by foreigners without realizing it's tied to a high degree of mastering the language—address them without saying bonjour first and they might get offended. On the other side they often seem self aware about speaking English so many try to avoid it. But none of these things should be interpreted as a lack of interest—my impression is that many of the people it's hard to get through to would genuinely love to talk to people from all over the world. They just struggle to get to that point.