Who is going to fund it then?

The main issue is that the concept and its advantages is rather unbelievable to most and they would rather stick to their usual fiat and credit cards. It has hard to explain everything with the target audience's attention using a billboard or advertisements in general. Bitcoin does needs more exposure but some would view it as a ponzi scheme since it is a new concept to them. What we need is more promotions by making documentaries, people mentioning it to their friends repeatedly and explain it to them in detail.