Seems you can’t market a mobile device these days without a native content-and-cloud service to go with it. The iPad and iPhone have iTunes; the Kindle Fire has Amazon Prime Video; the Nexus 7 has the beefed-up Google Play; and soon, Barnes & Noble’s Nook tablet will have Nook Video, featuring downloadable movies and TV content from the likes of HBO, Viacom, Sony Pictures and Disney, among others. Movies downloaded from the purchase-on-demand service can been stored in Nook Cloud and will be compatible with UltraViolet, allowing access from multiple devices.

Even Research in Motion (?!) is adding music, movies and TV shows to RIM App World as part of BlackBerry 10, the company said today.

As I’ve discussed here before, and as the Wall Street Journal noted yesterday, the ever-closer corporate and strategic ties between content services and the devices they run on is likely to put pressure on standalone content services like Netflix and Pandora, which lack the capacity that device-based content ecosystems have to add value to using the service by leveraging interactivity, cloud storage, second-screen support and other capabilities.

We’re still waiting to hear whether Microsoft’s Surface tablets will come with native support for Xbox Live, but the capability is there is Microsoft wants to use it. Interestingly, though Microsoft was not part of B&N’s announcement today, notwithstanding its $300 million investment in Nook earlier this year, it’s fingerprints on visible in Nook Video. The content providers for Nook Video are the same ones that make their content available through Xbox Live, and the native support for UltraViolet looks like a very Microsoft-y touch, given the heavy lifting in Redmond to get UV up and running.