There are plenty of people who are passionate about their startups, working in a team of talented people, with customers, and insider information.
If a company went to a VC and used these competitive advantages, they'd be shot down in a second. Imagine this scenario:
Hi, I'm jargon. I am really super passionate about this idea and it's in my knowledge domain, because I have retail store. I'm a programmer with a retail store who has this software that I wrote to help me manage my retail store. I got 5 other retail stores on my block to buy it because it is so awesome. No other company is going to be able to compete with it, because all I care about is retail store software. Plus, we got Donald Trump to market it for us!
What VC in their right mind would ever invest in something like that?