In the short term yes, it will create problems with energy acquisition, but in the longer term it provides a direct lesson in the need to reduce your dependence on foreign supplies. Even 20 years ago, there were few avenues to doing so. These days with renewables, the domestic supply could be significantly increased at relatively reasonable costs. It also becomes a strategic/national security imperative to reduce dependence on foreign energy sources. For a long time now, Europe had this idea that as long as they strengthened their energy economy ties with Russia, they could prevent this sort of conflict. That fantasy has largely been shattered now.