I'm reminded of the movie Velvet Goldmine. It's intended to be biographical (very easy to figure out of whom) but because they couldn't secure the rights they

I'm reminded of the movie Velvet Goldmine. It's intended to be biographical (very easy to figure out of whom) but because they couldn't secure the rights they just switched a few facts here and there, changed names and voila - successful truth-based movie without any rights secured.