Price
Agreed, for a manufacturer it's extremely difficult to turn a profit. Costs are enormous. Design, testing, marketing, manufacturing, distributing, support, the list goes on. All of these things have to be paid for by sale of the goods. The world-wide market for RC helis is rather small and there is a lot of competition.
The level of elegant sophistication on the latest RC helis amazes me. I consider RC helis aggressively priced.
Jason