Is the internet too small?

Either there are less than seventy thousand people on the internet or something else is going on because www.sm.net does not exist, as of the 21st of March 2016. If only one in a hundred people on the internet have ever created a website with two letters, like the acronym of a company name, or of something like, in this case, sadism and masochism, and only one in a hundred of those use .net as the top level domain, seventy thousand people should be enough for www.sm.net to be created. The question is, why hasn't it been? Is the internet too small? Or what else could be going on?