Took some time to read this. Very well structured @pps. I was wondering if this was same as SiaCoin and you answered that in the last point.

I think these storage systems can be disruptive. But there could be a very high price to pay, that could bring you down from moral high-ground, if you happen to store files of questionable nature.

It could become dubious and uncontrollable if people start using these storage systems for all the wrong reasons. Do write about this point as well to bring more objectivity to your post.