They had hundreds of years to generate an alternative to Russian gas and they didn't. All this complacency has produced results and Europe will have to lend an arm to avoid a collapse.
There is no viable alternative to the Russian gas. It is outright stupid to believe that pipeline gas can be replaced with LNG. To start with, neither the EU has that many LNG terminals, nor that much spare capacity exists among the LNG producers. And it is ironical that the same people who have shut down the nuclear power plants, there by increasing the dependence on the Russian gas are now pushing ahead with their plans for a total embargo on Russian energy exports. I don't understand what is going through the mind of these EU idiots. Their stupid sanctions have hurt them more than anyone else.