The truth is, like with most things, there is no secret recipe that will guarantee your success. However, there is a structured process that can significantly reduce your chances of failure. The crucial point is choosing the viable industry. As an example we can indicate software development field. See sloboda-studio.com/ruby-on-rails and discover the details.It’s easier to provide value (and relevance) when you build a marketplace in a sector that has lots of suppliers & buyers. Another thing is frequency. If you are aiming to build a marketplace for a low-frequency product or service you need a high value per sale. However, if your business is high-frequency, you can tolerate a lower value per sale. Additional point is defining your unique value proposition.