do you have any proof of this IP you are talking about? Are you claiming Cydia developers are illegal? Every court in Europe would laugh you out of court.
Almost any original code written is the programmer's IP. They hold the copyright to the code. Copyright = IP.
Every time your application call an API provided by iOS, you are using Apple's code* and thus IP.
Every time your application call an API provided by Android or Google Play Services, you are using Google's code**.
It's impossible to write an app for iOS without using any of the APIs provided. You need them to launch your app, load your resources, write to the screen, interact with the user etc.
Apple has a right to get paid for use of its IP, especially when the user is a commercial entity like a developer. IP law varies by country but they are all bound by the Bern convention.
If Cydia is using or distributing code which Apple's hasn't granted them admission to do, or the law explicitly grants Cydia's use to be an exception, they are breaking copyright which is illegal.
It's the same for your code. No one can use or distribute your code without your permission.
*Apple probably has API which code they don't own. Then you are not using the IP of Apple but of the IP holder of that code.
** Same applies for Google.