The person is likely going through the 5 stages of coping.

1. The product isn't useful

2. The product is useful but nobody is using it.

3. Ok, a lot of people are using it but nobody is buying it.

4. Ok, some people are buying it but the product is not innovative. Somebody invented it first. <--- the person is here.

5. Ok, the product is innovative but it's not like it will cure cancer!!!