Not using spectrum is something we've tackled. The two most recent auctions and the upcoming one this year have the most stringent deployment conditions we've ever set. People who have recently bought spectrum and people who will be buying spectrum are doing so to deploy it, because if it's not deployed, it will be taken away.
Evidence of meeting #52 for Industry, Science and Technology in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was spectrum.
A video is available from Parliament.