Despite what domainers may say, there are way more people on the net who have no domain, no site, and have no need of a site.
As more and more web browsing moves to tablets like the ipad, fewer and fewer people will want a domain name, etc.
And I think that at some point, more and more businesses will opt not to have their own domain and site!
But instead use one of the present social media sites for everything (facebook at present).
Simply because they have to move to where the people are, and what the people are doing.