I think you're underestimating the willingness of people to suffer financial hardship this winter to divorce themselves of Russian energy. People in the West really don't like dictators invading their neighbors, and certainly there's a long standing distaste of Russia generally.

While people are also blaming corporate greed for the price crisis, everyone is well aware that the sanctions are causing pain for both parties. There's no political or social support for going back into Putin's arms, so here we are.