Cory Doctorow of the EFF argues that more unlicensed spectrum would result in greater individual expression: The Electronic Frontier Foundation (EFF) says that the proliferation of cheap and interesting devices in the 2.4 GHz band due to the availability of unlicensed free uses has led to more and varied forms of expression. ...these devices are permitting more communication--more speech--from a greater variety of speakers, than the traditional command-and-control exclusive-use allocations have ever fostered.
You can download the full brief here via a link to the PDF version.