But below the big three, some new companies are quickly climbing the ranks, according to research by market tracker Parks Associates.
The fourth-largest Internet video service ranked by number of subscribers is Major League Baseball’s MLB.TV, followed by premium cable channel spinoffs HBO Now and Starz. CBS’s (CBS, +0.58%) Showtime’s Internet service ranked eighth and CBS All Access, the home of the latest Star Trek TV series, was ninth.
Rapid growth has been fueled by interest both from cord cutters, who have dropped traditional cable TV subscriptions, as well as more omnivorous households that subscribe to both cable and Internet-only “over-the-top” services, as the industry calls them. One-third of all households with a broadband Internet service subscribe to at least two “over-the-top,” or OTT, services, Parks said.
From the article "After Netflix, Hulu, and Amazon, There Are Some Surprises in Top-Ranked Internet Video Services" by Aaron Pressman.