I guess it is a good thing that people donate time, techniques, and information to the forum. Most who do so, do not rely on their information or products made from the information to make a living, so they are free to give it.
Others are supporting their family, or research by charging for the information or products that they produce, like all the rest of us do in our given field. I know I fully expect to be paid for my work. I have never stayed at a job that did not produce a paycheck, has anyone else?
Neither Bob Beck or Hulda Clark worked for free. They did donate things to us, but if you look at what they donated, it really was not patentable or marketable to any degree. They gave away things that could not readily be capitalized on. Rife himself certainly made a valiant attempt to capitalize on his frequency machine, the problem came in when a powerful figure wanted it for virtually nothing, and destroyed him when he could not get it.
I don't think we are in a position to pass judgment on others until we take a walk in their shoes. We all need to make a living, however we can.
Dan