European leaders fundamentally have no issue with Americans dominating tech and were happy to have their entire digital infrastructures rely on US companies. If the Trump admin could give them some sort of nod behind the scenes that all of this is just a big show and they're not actually going to break NATO or invade or w/e insane shit they're saying I guarantee you a sizeable amount would just say hey no worries then let's keep the status quo going.
But that's not what's happening. It's a clear and obvious security risk to their sovereignty. If the government can't guarantee that to its citizens then what even is its purpose? The Trump admin has already tried to use American tech dominance as leverage.
Ask yourself this question, what if there was a foreign tech competitor that managed to scale up to be basically a better cheaper AWS. Would the US government ever allow it to encroach its market to the point that AWS or Azure did in Europe? Look at what happened to tiktok if you want to see what approach they'd likely take.
So how exactly would you envision an objective and neutral provider in a world of geopolitical competition?