If anything, they copied e-cigs not the other way around. Think of them as divergent technologies sharing a basic principle but thats where all similarities end.
As someone whos been here since 2009 as both a member and a vendor I can assure you that not a single innovation or leap in technology was borrowed from that "other" hobby.Most came about right here on this very forum and then were either manufactured and sold by industrious vendors or quickly copied by the Chinese and brought to the masses.
Maybe some of these rebranded egos and such. But herbal vaporizers have been around since long before 2009.