Not really. This isn't about completely preventing publishers from adding account systems etc. (even if that would be ideal), it's about publishers removing your ability to play games after they the shut down the servers. The former would hopefully be a side effect of a potential law change/ruling but the main point is keeping games playable after the official support ends.

In your example it could be removal of the sign in requirement once the account system is down but not necessarily preventing them from existing in the first place.