I too purchased a ROKU (and have a slingbox on my wish-list) mostly because someone I know has a daily show on Freespeech TV and it's good to see as well as hear it on Livestream/freespeechtv.
RE: not autorizing channels: Of course they won't authorize any channel they can avoid because it's direct competitioin to their monopoly and bypassed the tweaked regulations they paid er, donated to campaigns to have inserted into law.
You certainly won't find any channel whose point of view is people-centered and not a corporate sell-out, i.e. freespeech tv or progressive content. Among the big monopolies such as Time Warner, Cox, Dish, Direct TV and especially Comcast, you will find them kicking and screaming into a future where the monopoly they created to compete with broadcast television (while broadcasters were kicking and screaming), is challenged in a similar way by streaming from the internet we all paid for many times in many ways.
Way back in the 80's, I believe, to get some tax breaks, AT&T and other providers promised to build broadband access to all communities. They got the tax breaks, but we didn't get the capital investment to bring broadband to the entire US.
While other countries are creating information infrastructure as fast as they can, our corporate masters will hold out as long as possible to maximize profits. Corporations do not "care" about people: only profit-by law. It's up to real people to regulate them so they don't turn us all into wage slaves or worse.