I look for WBC to continue, at least for the near term (>5 years).
Lacking a massive public outcry resulting in [essentially] worldwide demonization while he was at the head, and no cries for a witchhunt to root out the survivors (a` la the end of WWII) what will take them down is ennui on their part as well as ours. They have not been very active of late and may not have the will or the wherewithall to ramp up again.
stay safe.