EASA66 is generally not freelance
Because it wasn’t possible. It now is. And it will change.
German CAA already approved one
Article: https://www.lba.de/DE/TechnikUmweltschutz/TechnischesPersonal/IARS_node.html
I think the harmonized changes of Part-ML will fuel demand, and independent 66 reviewers will have good business.