As an (eastern) European this is to me a greater concern than the Russian invasion in terms of availability of gas for the winter, considering how so many of those places run on gas turbines.

Putin only has a certain amount of the resource on tap and sells it to someone eventually. Meanwhile data centers will eat up whatever you throw at them at any price, especially that in principle they don't need to be connected to the grid, so I imagine setting up their power supply must take months at the longest.

The US has incredible gas reserves. Much more that can be exported with ships.