What do you say when a potential clients suggests a revenue share?
My immediate thought is fuck off.
Of course I'm a bit more diplomatic. I can't help but think though... "If someone offered YOU a deal where you do months of your expert work for free, with the promise of maybe getting paid later based on factors partly outside your control would you take it?"
No? Then don't ask me to.
Revenue share really means that they don't understand your expertise enough to pay for it, and I'm they're not confident enough in their own business to invest in it."