"As we all know, the majority of the "royalties" are never seen by the artist but instead are slurped into the coffers of potentially corrupt organisations like RIAA, thence possibly to appear in the salary and perk packages of the management types in said organisations."
The RIAA has nothing whatsoever to do with the collection of royalties.
It has pretty nearly always been the case that when someone brings up the theme of artists getting cheated by record labels, it has always been in defense of some imaginary sort of right, actually a baseless feeling of entitlement, to get music and entertainment in general, for free. I have to suppose that you are doing something similar.
The theme by the way is not true. Because of the expense of recording a record and promoting it at all, coupled with the fact that most bands will never sell enough records to recoup the record label's investment, the idea that most artists get cheated is simply not true.
In fact, it is income from the more successful artists which underwrites and finances the new acts, most of which will product nothing but a loss on the balance sheet.
Now it may be the case that the more successful artists feel - and are - cheated, but they do got their start from seed money taken from other artists.