"The speech was drafted with the assistance of Stanley Levison and Clarence Benjamin Jones[17] in Riverdale, New York City. Jones has said that "the logistical preparations for the march were so burdensome that the speech was not a priority for us" and that, "on the evening of Tuesday, Aug. 27, [12 hours before the March] Martin still didn't know what he was going to say"."
I'm not so sure these people would appreciate the fact that you think they should work without being compensated for it, or that somehow, compensation and/or ownership isn't a good reason to do something.