I'm not aware of them outright buying any apps, but they did make a deal with the ITV Player people to make the newest versions of that app Samsung device specific for a pretty substantial period of time.
Of course, I've never even heard of ITV Player until that deal became public and it is a two-star app on the app store, so I'm not sure that matters much in the great scheme of things.
Well, the pretty substantial period of time is until August 31 and is almost a betatesting period according to ITV themselves:
"ITV says it's offering the app exclusively to Samsung "for an initial period while we endeavor to optimize and improve the experience before releasing to other device manufacturers.""