why not?

after reading this article about bob marley and the loss of his message in the face of, well, our cultural ignorance, i have started wondering why there has not been a big screen film made about him and his life and message.
oliver stone commemorated the drug-induced life and times of jim morrison (don't misunderstand, i am a fan of both his music and his writing), and though morrison did make a significant impact on the music world and the lives of many young people of that generation, he did not proliferate the sort of humanitarian message bob marley did.
i have always enjoyed marley's music, both the reggae feel and the lyrics, but it wasn't until i heard a bit more about his story, then watched a semi-documentary special on his life that i began to see the even deeper meaning behind his music. and i still remember when i was living in NYC the huge disappointment i felt the first time i was walking from the 49th street N train station to my gym at Worldwide Plaza and i looked up and saw a huge billboard, using bob marley's image or words--i seem to have blocked out the specifics--to sell something like tennis shoes.
i realize that perhaps his message may seem old-school or outdated in today's world. but perhaps that's the problem. dubya rants on about values~but he only applies that to certain people. i think he should take a more literal view of values and place value on the people, all the people, the way marley did.