Never use the company's name in your naming convention

I think the more appropriate advice is don't hard code strings anywhere in your source. Sometimes using such strings is unavoidable and the most practical thing to do (e.g bundle IDs in iOS apps). But if you have to use such strings, define them ONCE in one header file, plist file, or similar and use the reference everywhere else. I've used this successfully through several ownership changes of several apps across several platforms, and always found it to be a minimal, trivial problem - as long as the strings are cleanly #defined in one place.

The Java naming convention is one of the best things introduced with it, neatly preventing package collisions with the creative misuse of DNS. If you fear your company will change, invent an internal convention. For anything you intend to release outside (and want to exist beyond the borders of your company) you should acquire a domain for it.

Having said that, I always smile inside, thinking of black magnesium cubes, when I extend NSObject...