You need to do your market research. You need to make sure that the market is healthy and that there is space in the market for your idea. And going back to the idea of validating, there is a great book. I do not remember who it is written by but, it is called "Nail It And Scale It". I think it was a book produced here in Utah. The book "Nail It And Scale It" talks about how doing short, easy market tests that allow you to validate or invalidate the demand for your idea/product in the market.