The tariffs are on European exports. The problem is Europe has a weak domestic consumer market and is dependent on selling stuff to the US, not buying from them.
[1] https://policy.trade.ec.europa.eu/eu-trade-relationships-cou...
Unfortunately despite their best efforts this isn't something Eurocrats can simply will into existence. The most important prerequisite is a common language, and there is zero political will to do the only sensible thing and establish English as the official common language of the EU.
What do you mean by "unilateral tariffs"?
> The reason the US is not able to extract the same rents from China is that they have digital sovereignty and the US cannot just pull the cloud plug from them.
The US has higher tariffs against Chinese imports than European imports.