Its a very good point. Is it my turn to ask you a question instead of answering yours now then? I'll ask you the same question again:That's a good point. So do you have examples of what you said? Because there are examples of Apple doing it. Some posted here on this thread......
Do you have a list of reviewers that Samsung invite to their launches that write negatively about their products?
Geoffrey Fowler of the Wall Street Journal was present at the launch of the iPhone 6 and had a hands on demo. He was mostly positive but had a few criticisms including the battery life, ease of use one handed with the 6 Plus, and the usefulness of sending voice messages in iMessage. He hasn't been banned as far as I know however for bringing up negative opinions. I doubt they would invite people who openly heckle the speaker or go in there with the intention or writing a scathing review. All companies of this calibre choose their audience, but then again your point is Apple do this and my question is still there for you to answer.