Why be secretive about your product before launch and still make it successful?

Before you launch your product, should tell everyone about it or not?

You should avoid showing your product while you are working on it because you will be exposed to your competitors. They will copy and release before you. Also, another way to find out if people will buy your product is to ask people before you launch. Because if you are making something that people don’t want, you will face a failure.

Yet, this confusion can be solved.

Find out why you should never tell everything about your product before you launch. Also, what should you do to make sure people will buy from you even if they don’t know about your product yet? So, that you can gain the advantage over your competition.