People don't aggressively market bitcoin because there aren't any affiliate marketing plans involved in bitcoin. As people are paid to market other new ICO and IEO so they market those projects and earn money from them, whereas those people who watch the content on the marketer's channel are the ones that loose money in the process of buying that token and not bitcoin. I guess there should be campaigns to promote bitcoin also as it will prevent many scams from happening to the newbies.