Seth Godin: How to get your ideas to spread video reflection

Seth Godin tells us that in order for ideas to spread, it must be remarkable. He told us to find the people who really care about the product that we are making, and not to design our product to fit majority of the population. While his opinion holds water, I feel that it only works to spread the word about the product, but getting people to purchase the product is another story. He forgets that friends of those particular type of people are usually those of similar interest. For example, a new game was just released. The gamers are raving about it, they tell their friends, but those who fully understand why they are raving about it are most probably their gamer friends. Yes, their non-gamer friends will at least know a little about the game from listening to the raves, and maybe they will mention a little about it when their other friends happen to talk about it, but that is all it will be. Just knowing it exists. Will they buy it? We do not know for certain. Hence, the success will only be apparent within the circle of similar interest.