Most of these "disruptive" companies are pissing away investors' money without actually accomplishing anything. They will never be productive or profitable, so

Most of these "disruptive" companies are pissing away investors' money without actually accomplishing anything. They will never be productive or profitable, so there is no point in trying to out-compete them. Edit: as far as the BigCos are concerned, this is also true of many of their internal teams that are chasing "moonshots" in parallel to the main business model. The "investors" in this case are the profitable parts of the BigCo.