High profile virtual operators floundering.

"Mobile virtual network operators (MVNO) don't own a physical cellular network. Rather, they rent and resell spectrum from 'real' wireless operators as voice and data services. The most high-profile recent MVNO appeared when The Walt Disney Company launched the family-friendly Disney Mobile service - with tight parental controls - over the Sprint PCS network during the middle of last month. Some other, slightly older - but also high-profile MVNOs - could be in trouble, however... As of April, MVNOs accounted for around 5 percent of the total U.S. mobile market, but that number could rise to as high as 10 to 20 percent in the next few years, according to Gartner analysts."