If ideas worth something, then an idea would be a commodity being traded among people in markets. Since there isn't a market where people trade ideas with something else, like money, there simply isn't a market for ideas. Hence, ideas are worth nothing.
Most markets are for items there are many of. There are lots of apples, people see friends enjoying them, people buy one, like it, buy another, a price is established. Key facts: you get to buy it more than once, more than one person gets to buy it, you can tell in advance it is worth something. Take too many of those away, and the market goes away.
An idea (for a venture) is: unique (a close variant missing a key part has completely different value), you would not pay for it twice, and selling it to multiple people diminishes its value. Why would you think the value of an idea would be well captured in a market?
You do realize a market is just one mechanism for expressing value, right? or is air value-less?
I don't buy this; I think starting off in the right market is a huge determinant of success.
The reason there's no market is because it takes an idea and a person who can execute -- knowledge, skills, connections, experience, etc. Ideas aren't separable from people in a way that would make a market possible.
