Not this again...Limiting it to a % of something will just make the current system increase costs to the point where 10% becomes enough to continue paying fat checks to all these leeches.
Hey. Didn't realize that it was like that child toy that looked like a clear double-lined liquid-gel-filled with sparklers where you squeeze one end and it escapes out bigger at the other end.
Ummm, now that I had time to visualize at macroeconomic level, simple cap at each middleman's transactional behooves the supply chain to conspire on price-fixing just to feed and assist all the middlemen down the line to the patient, as you've asserted.
To introduce inter-middleman fighting ensues between favorable price and lower price...
Fixing at 1% total for each step along the way doesn't work because one can just add even more middlemen.
Fixed 2% price, over entire chain: A competing supplier can easily undercut that downstream conspiratorial bloat.
It doesn't work.