The present problem is not marketing. The problem is making it easy, practical, and profitable for merchants to accept it online and in stores. Practical work has to be done to make it attractive in this way, because at present, it’s not. It’s a big confusing pain in the ass.
Only when there’s a great easy system for merchants can marketing come into play. Then it will be important, and will have to be done by someone like PoS providers.
The history of BCH shows what happens when you just believe that the inherent value of a technology will draw users. It just doesn’t happen. Same with NeXT computer.