There is no cartel on the Red Button hard forked protocol. Anyone has equal access to the ability to mine. The fact that someone was a cartel previously does not grant any vested status in the future. Deepbit, for example, has no greater ability to show up today and be a mining cartel than you or I do.
Come on, you know that "the cartel" there means "the cartel of old-chain miners who want to force a change in the block schedule". It is not "a cartel of rebel-chain miners".
Yes, and what I'm saying is there is no cartel. A cartel implies there is some barrier to entry (for example by limited capacity of equipment). There is none here; everyone can mine.