The product of my work is IP, and I voluntarily give away the copyright. Even more, it is in my best interest if anyone has free access to my works. I still do not work for free.
I did not say I have a complete business model where IP is free to everyone -- I merely pointed out that the current situation, where you can simply replicate your works and expect a return from each copy, has not been very long in existence, and will likely not remain much longer in existence.
Earlier on this thread, others gave good examples of professions that stopped being profitable. I am sorry to repeat that, but those who solely rely on selling IP may be practicing such a profession.
A minor note -- I don't understand why you should use Star Treck as an example -- we have a good example here on Earth, it's called Communism, and we all know how that went. I am not suggesting we try that, I am suggesting though that the economy laws of capitalism will likely do away with IP, so that Capitalism can develop further.