This is a significant about face for EU rhetoric around building a domestic ecosystem in a number of key technologies and the IAA's stated goal to allow the EU to "transition to a clean and digital economy" and enhance it's "capacity to respond and reduce third country dependencies".
[0] - https://single-market-economy.ec.europa.eu/document/download...
Think of legislation like code with litigation as the compiler. You need legislation to be extensive otherwise edge cases that aren't called out will be taken advantage of or continuously litigated.
It's also an admission by the EC that the EU cannot develop ecosystems for certain classes of technology in the short-to-medium term.