I don't know the ins and outs of the industry but I doubt very much that any artist would be on more than 5%. More than likely a couple % for an unknown with extra for writing and producing if they were involved there.
I would like to see the industry breakdown for sales of 500 discs bringing in $18.000. Pressing discs, distribution, promotion, admin etc and see just what is left, not a lot I bet
Pretty sure I read that some of the Motown stars were on a percent or two and then Motown deducted money for touring costs, choreography etc leaving them with f*** all virtually.
I do agree with the principal part and maybe recognition would come into it for some, legal recognition that is and not recognition at the hands of bootleggers.