Specifically if theres any way to test it. It seems like I have asked a sample group on the problem but they all said it isnt a problem. How do I go about provi

Specifically if theres any way to test it. It seems like I have asked a sample group on the problem but they all said it isnt a problem. How do I go about proving that it is a problem? Like no one saw what Dropbox solved was a big problem, until they started using the product. But, I have not build the product out yet.