For starters, the world wide web was dreamt up in Europe by CERN. Had the US tried to gain ownership, Europe and the rest of the world would have just gone there merry way seperate from the US. Secondly the NSA already owns the internet.
The scary thing is America had once thought of *owning* the internet. It was going to be strict business, no Facebook, twitter, or Dilbert online. Many jobs would have been lost. But now it is a forgotten subject, hopefully.