As a Coloradan, I've experienced the MJ wave first hand when they were the first state to legalize MJ. The CBD market will be bigger and more lucrative than the THC market.
CBD can be used to gain apatite for cancer patients, relieve pain for sore muscles / arthritis / headaches, relieve anxiety, and most of all, help prevent seizures for kids with epilepsy.
The market will simply be broader than the people that want to get faded every night.