Mark CMG
Creative Mountain Games
You are of course assuming that 5e has hurt the 3pp publishers, which I am not sure is actually the case.
I'm not any worse off and I don't sell *5E* or PF products. If I turned what little efforts I make selling gaming stuff to some 5E material, I doubt it would be a huge impact on my own bottom line. I think the assumption on the part of some people is that if you wish to produce 5E material for sale, you're in it for the money and thus untrustworthy which happens to be another form of nonsense.