In this particular industry, it is. It depends on whether qualcomm's patented features "drive the market demand" for the finished goods. So in mobile devices

In this particular industry, it is. It depends on whether qualcomm's patented features "drive the market demand" for the finished goods. So in mobile devices, Qualcomm's wireless patents do deservingly get per device royalty whereas, for automobiles, it would make no sense to use the same per device royalty. On a somewhat unrelated note, Apple demanded the entire profit on per device basis for a couple of frivolous design infringement from Samsung and won a couple of years ago. This absurd, biased lower court ruling was overturned by the Supreme Court last year.