Apple cultivates a culture of consumers, expects them to spend money to contribute to the community existence and in return rewards them with and outstanding product and experience and excellent Customer SAT.
The strategy in interoperability features between devices… mobile, portable and desktop…across their line of technology is quite ingenious. Their focus on the economics in the post sale binary distribution of entertainment and services is the glue that keeps it together and is supported by a thriving Developer community.
The standardization and well-managed ‘encouraged upward migration’ through the use of code signing and sun setting previous iOS firmware provides a measure of security that most other mobile operating system communities only get to talk about.
Because if you don’t know if your current device is going to be supported for very long…why would you bother investing in its capability expansion through applications?