When you do something like this these days, you only attract trouble (and a very few well-meaning people): spammers, script-kiddies, pirates looking for cheap storage or seedboxes and hacker groups valuing the anonymity for their releases which in turn will attract DoS attacks which will be a huge hassle for the provider to deal with.
So within a year, you won't only have to deal with too many users taking too many resources, you will also have to deal with annoyed providers, with law enforcement constantly asking for data you can't provide and of course with constant DMCA takedown requests.
And that's why we can't have nice things any more :/