Yeah, I know the high prices are due to Apple. However, without subsidies, I doubt smartphone adoption in the US would have gone as quickly. Smartphone sales, the iPhone in particular, wouldn't be as high either. AT&T cutting subsidies has a strong potential to lower iPhone sales in the US either due to users buying less expensive phones or taking a longer time between upgrades. The iPhone has unusually high market penetration in the US because of subsidies. Without it, Apple might have to cut prices in order to maintain sales.
That is somewhat true. Your comments remind me why I found some of the comments regarding the 5C (as a cheaper iphone) laughable. It was the same $100 off with mostly prior year hardware and a cheaper case design with poor color choices. I will say that Apple has stuck to similar price points in countries where subsidies are less common. They may have stuck to a similar price model although it's difficult to tell. There hasn't been a single point in the US where they relied solely on the unsubsidized retail cost of the phone for the bulk of their sales, so it's difficult to say whether it would change their pricing strategy. I am confident it would at least come up in board meetings.