Given a spread of this size, $4 billion starts looking like pretty small potatoes once it’s broken down between all the players.
Not if all those individual players get together fund some research that demonstrates homeopathy works. It would be very much in their interests to obtain proof that it work. (Of course, if you suspect that homeopathy does not work, then it would not be in your interests to conduct any research, otherwise it may damage your market).
A lot of science is done on the basis of small contributions from various parties, including ME/CFS research which is funded by thousands of patients each contributing.
And it's not just the homeopathy manufacturers, but also the millions of users of homeopathy: people who use homeopathy tend to be very passionate about it, so this is another group who might like to contribute to research.
As @Wayne pointed out, the action of homeopathic treatments isn’t biochemical. Homeopathy works entirely differently from biochemical medications and treatments, and on different levels. Comparing it to those forms of medications/treatment protocols is, as I’ve said elsewhere in this thread, like comparing apples and Fennic foxes.
Here’s @Wayne’s quote:
I only perused a few posts on this thread, but noticed some familiar arguments against homeopathy; that it is so "diluted", it can't plausibly be beneficial. What most people don't realize is that unlike modern medicines that depend on molecular structures of drugs and other medical concoctions, homeopathy works on an energetic or vibrational level.
The trouble with that argument is that there isn't really any scientific meaning to the statement "homeopathy works on an energetic or vibrational level". We all understand what the word "vibes" means in everyday life, as in "I walked into the room, and everyone was looking at me, and there was a bad vibe". However, to be scientific, you have to be much more precise that just saying "it works on a vibrational level". You need to detail the exact mechanism of operation.
But if homeopathy is claiming it works on some vague and unspecified "vibrational level", then the only thing you can do it check whether or not it can cure or improve disease. So you can still be scientific about it.