The first apps I've bought for my iPhone were dictionaries. The owners of the dictionary material sold the right to the app developers, but didn't extend it, th

The first apps I've bought for my iPhone were dictionaries. The owners of the dictionary material sold the right to the app developers, but didn't extend it, therefore the developer doesn't even have the right to publish an updated version, even if it would be only a recompile with the never compilers for them. Which means that even if I've paid for the content, now I'll have to purchase it again from another developer only because some random limitation is introduced, and even that purchases can soon disappear again.