I have a startup idea that improves upon an existing idea in a uniquel and differentiated way. Let's call my idea "David". However, there exists a very large, well-known competitor, "Goliath".
David vs Goliath
David: new to industry, bootstrapped, uniquely differentiated, & taps into a revenue model not currently being utilized by Goliath
Goliath: Well-known brand, well-rooted in the industry; have lots of money to copy David
So the question is:
What do I say to investors who ask, "Well, what's stopping Goliath from doing the same thing? Couldn't they just copy you?"
Edit: I have done market validation and customers are interested in my concept.