If I look around me, alot of netflixers are 2 to 4 families pooling together. Individually they pay €5. These are the people who will need to renegotiate in their pool. I'd say this is the biggest group of Netflix users.

Combine that with europe getting less content than the US, with bad or no subtitles, and the quality of the content going down the last few years. People are discussing cancelling already. Forcing these people to decide now can't end well for Netflix. And if people around you cancel without much hassle, why wouldn't you?