The BS factor is directly related to the $ amount advanced..... the
more they are willing to pay... the more BS you tolerate. Remembering
that even if the project falls flat you get to keep the advance.
However, I have never had a problem with this clause in an
agreement.... the advance tends to motivate people, if for no other
reason than to make back the money they advanced the artist. Once the
product is produced, marketed and the advance is paid back (from the
artist royalties), royalties then revert back to the artist!