Was it dangerous for Uber to challenge the entrenched taxi market? Yes. Was it dangerous for airbnb to challenge the entrenched hotel market? Yes. Was it dangerous for Napster to challenge the entrenched music industry? Yes. Was it dangerous for Secret to challenge Twitter? Yes.
Napster and Secret were monumental failures. They were dangerous, disruptive. . . and stupid.
Uber and airbnb are monumental successes (so far). They are dangerous, disruptive. . . and smart.
Being dangerous and disruptive can be a powerful way to enter a market. The simple lesson is . . . don’t be stupid.