All of this is wishful thinking, Qatar is the only one making policies against other GCC states wishes, however Qatar desperately trying to arm and support Islamist so that it can increase its clout in the region is failing. And GCC already put Qatar in its place, they will be coming around now.
GCC is still an effective organization and nobody is saying the GCC is done or over, in fact it is getting stronger, I can be in any GCC state and be the exact same as if I am in KSA, same services, same benefits, hell all laws would treat me as a full citizen in These countries