While it's true that really really good ideas are not free, you seem to be understating the importance of execution. There is a huge difference between "Let's

While it's true that really really good ideas are not free, you seem to be understating the importance of execution. There is a huge difference between "Let's start an online bookshop", which was an idea many people had, and Amazon.com. Or between "let's use links like academic citations as a measure of quality of web pages" and google.com.