Most of the news sites (like TOI, CNNIBN etc), most of the ecommerce sites(like saholic, defunct letsbuy, infibeam, homeshop18 etc).

And those examples are fairly successful enterprises despite having bad usability. Most other startups with bad usability would have obviously shutdown and unavailable to quote here.

Like @linvin commented somewhere here, Qyuki will be an interesting case study to see if content wins over usability.