You developed a file sharing system that allows anyone to obtain the full contents of a file by simply knowing its hash?
Then when developers make tools to allow using this for simple cross-account file transfer you send DMCA takedown notices, claiming you are the rightful copyright holder of their code, to places like GitHub?
You seem to equate other file transfer services with "illegal file sharing".
Did you ever consider the possibility that someone could steal the contents of another person's file by knowing the hash of it? Sometimes hashes are public info and the file contents are not.
Or am I not understanding what just happened here?