Earlier quoted context omitted.
I doubt US tech understands. For one, they are deeply in bed with the current administration (for any definition of current, past, and future). For another, they fight tooth and nail any and all sovereignity of data even within their own walled gardens. See decade of battles by Google, Apple, Facebook etc. in the EU.
The true extent of the damage has yet to be seen. The Trump administration is a shot across the bows for Europeans, undoubtedly. But do they have to up their defence spending a bit, engage in some tough talk, reduce their dependence on imported energy, and gift Trump some gold-plated furniture? Or do they have to do that and eliminate their dependence on Boeing, Lockheed Martin, Northrop Grumman, Intel, AMD, nvidia,…
Some of those are not like the others. Some are B2C and will face (indeed, are facing), tougher regulations. Some are B2B or B2G and there are already companies squaring up to take some of that pie. Many are ultimately reliant on ASML tech which I think Europe is prepared to weaponise in a trade war if they need to.
And yes, it'll take leadership, and constitution of the United States, or constitution of the physical body: one of them is taking that man out of the White House in the next 10, 20 or however many years.
But the tone has been set. Trust takes years to build and seconds to destroy. The direction of travel has been created, and while it might take a generation to get to an end goal, the process has started already.