Publishers routinely demand that authors submit their next book (or even everything you write in the same genre for years) to them first and even if they reject it they have the right to match any offer you get later.
How many VCs demand rights over your next N years of startups?
Or we could talk about high-discount clauses: Where publishers get a bigger percentage when your books are discounted below a threshold they claim is unlikely... Only to turn around and encourage retailers (including Amazon) to discount your book just below that threshold - where they make more per book and you make substantially less.
How often do VCs make more money by going behind your back to convince an acquirer to pay less?
Or we could talk about rights reversion games, shuffling sales through shell companies cut royalties and on and on and on.
I know VCs can be ruthless, underhanded and worse, but traditional publishers can make them look like kittens by comparison.