Imagine you want something that doesn't exist. What do you do? It should be possible to commit to buy something at a price. Market research and product development is expensive, you need a guarantee you buy something at a price, buying signals are currently invisible.
For some thing to be successful, it needs critical mass. If a company doesn't get enough customers, it shall shut down. Same with websites and blogs, if they don't get visitors the creators or author loses interest or loses money for long enough they stop.