This post does a great job of distinguishing between 'disruptive' innovation and 'radical' innovation.
A thread on the two axes of innovation:
Incumbents who lose focus of their core offerings are ripe for disruption.
I think of it as anything that brings about a change of paradigm.
Three examples of radical innovation
- crypto (possibly)
As is evident, this type of innovation relies heavily on creating new ways of doing things.