Without considering all the further complications of Christensen’s explanations, which include margins, pricing etc, from an Innflect perspective you can simply consider any innovation that eventually replaces the old way of doing things as being disruptive.

For example, the innovation of the railroads disrupted the horse; the big supermarkets disrupted the corner shop; the flat panel LCD screen disrupted the bulky CRT screen; the PC disrupted the mainframe computer; the DVD disrupted the videotape and now streaming video has disrupted the DVD; CD’s disrupted the LP and cassettes and now streaming music has disrupted the CD; the cloud is disrupting the hard-drive and local software applications; the electric car is disrupting the combustion engine, the mobile phone is disrupting the landline…and the list goes on.