[In a letter to the SEC][link], Blockbuster expressed “substantial doubt” about its “ability to continue.”
Meanwhile, [Netflix’s stock][nfx] has doubled in the last 6 months.
[nfx]: http://www.google.com/finance?chdnp=1&chdd=1&chds=1&chdv=1&chvs=maximized&chdeh=0&chdet=1239137316735&chddm=49266&q=NASDAQ:NFLX&ntsp=0 “Netflix Stock Quote”
[link]: http://www.reuters.com/article/ousiv/idUSTRE53568L20090406 “Blockbuster gets going concern notice: SEC filing”