Well yes and no. They CAN lead to lower prices if its the situation where there can be manufacturing efficiencies gained with future production runs, and/or if larger volumes can lead to economies of scale.
Basically it can go in one of several ways:
1) its a new product where the above is possible, there is enough demand to establish a market, so the company lowers prices in order to gain more customers. This is the scenario you outlined. But it could also be that:
2)Its a product that is succesful enough, and has a market large enough to invite competition, leading to price discrimination.
3) There is enough of a market that the product is viable, but not enough to realize efficiencies,or invite competition in which case prices don't change and it becomes a niche product
4) That the product becomes successful enough that prices don't change, despite increased efficiencies, because demand is so strong that a price cut would only lead to decreased profits. See the ipad for this one.
So early adopters only lead to lower prices where there is enough early action to justify a market and where the producing company feels that it can maximize profits by lowering costs, passing the savings on to customers and increasing sales. They can also lead to lower prices if the success of a product invites competition leading to price discrimination strategies.