Yeah that's true, but it's also important to have a solid mutual understanding of your arrangement up front, when all parties can be objective and (hopefully) f

Yeah that's true, but it's also important to have a solid mutual understanding of your arrangement up front, when all parties can be objective and (hopefully) fair-minded, as opposed to when there is an actual problem and everything is subjective and everyone is self-interested. An old boss used to say "good friends make for good paperwork".