I suggest you read the indictment for Megaupload (Wikipedia summarizes it, but they cite the actual document you can view): https://en.wikipedia.org/wiki/Megaup

I suggest you read the indictment for Megaupload (Wikipedia summarizes it, but they cite the actual document you can view): https://en.wikipedia.org/wiki/Megaupload_legal_case#Basis_of_indictment https://en.wikipedia.org/wiki/Megaupload_legal_case#Basis_of... The indictment explicitly answers your questions about why Megaupload was different from other file sharing services.