Happens sometimes when you are too early to the market.
I had a product idea which I discussed with several people, and all of them said maybe not at this time. Foolishly, I dropped the idea and went to work with another startup, since I didn't find a market for it. Fast forward 6 years and similar products have come up and are some of the most popular startups in India.
Success with startups has something (no matter how small), to do with timing as well.