There is no certainty, only probability.
The recent growth of LLMs is a black swan. Any future prediction you attempt to make has massive error bars.
Europe is in a very precarious position. If LLMs actually play out and lead to economic booms (I'm not saying for individuals, note that), the EU as a whole will get absolutely trounced economically and likely experience a shrinking economy for the next 20+ years along with a shrinking population in most of the member countries. They are so far behind on power and compute of the US and China there is not any current path to catching up.
The US itself is in a precarious position with the amount of debt it has accrued, it could be right that LLMs are what leads to future economic booms, but be so far in the hole it takes decades to recover.
China is really in the best place at the moment. Trying to build up power and compute as fast as it can, copying American innovation at the cheap, and having a mountain of US and EU money to spend on it.