This is the reality all technical founders I've met want to be true: If you build a good enough product, competition or not, existing market or not, people will

This is the reality all technical founders I've met want to be true: If you build a good enough product, competition or not, existing market or not, people will come to you. I also know plenty of people who are cynical about that reality. So, what's going on? Is it just a matter of how good the product is? It can't just be great, it needs to be amazing?