I suspect that many have tried and were rebuffed. In undergrad I was rebuffed more than once because 'cis-white men can't be of any value as allies except as audience members and patrons'
Which I took to mean 'fuck you, shut up and pay me.'
That's an actual quote by the way. I only heard that specific phrasing once, but when I tried to have more serious discussion with people supposedly interested in 'equality' that rhetoric was what I got back.