[webmaven]

*> Redistribution is a key part of "[some list of freedoms]", and this "you can redistribute this version but if you do you'll be cut off from future versions" scheme is not something I've ever heard [RMS] endorse.

He likely wouldn't endorse it, but I don't think he would condemn it as non-Free. After all, if a company wants to "fire" a customer, they're allowed to do so, for whatever stupid reason they like.

As far as the customer's freedoms are concerned, as long as they're aware that by redistributing they're pulling the ripcord on the relationship and starting (or switching to) an unfriendly fork, well, that's just an oddly formal version of the process.