What mistake? Because you dont want an iPhone 5C, you assume nobody else wants an iPhone 5C? lol great logic.
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There are promotions for the 5C because the 5C is aimed at the casual consumer. Of all the smartphones out there, the iPhone is arguably one of the most expensive. I know plenty of people who buy Androids or Nokias because they're cheaper, not because they're better than iPhones (which we all know they're not
) but seriously...
Come christmas time/holiday season when people buy gifts for other people, the casual person will want a colorful and $99 phone (many stores here are doing $50 for the 5C)
The reason the 5S is doing so well right now is because the type of person who would buy a 5S is the same type of person who buys a phone the moment it is released. We only make up 20-30% of the iPhone user base. The market base the iPhone 5C is aimed towards generally doesn't buy phones on launch day or launch weekend. They'd buy it when their contracts run out, which can be anytime during the year...