Hey! (I thought of that...)
As a freshman in high school, I had the opportunity to take a Entrepreneurship course designated only for Juniors and Seniors. It helped that the instructor of the course was the head football coach (as I played football through high school), and that he was aware of my entrepreneurial mindset.
A basic intro into Entrepreneurship course, it solidified that business was going to be "my thing." Perhaps the most enriching aspect of the class was one of those come up with a business and run with it, type of deals. There were no restrictions, it could be anything you wanted. For some reason I had came up with the idea of a water bottle that flavors water as you drink it. It would use a solid flavor concentrate that would flavor in the water right before it hit your mouth in what resembled a Brita cartridge. I created all the usual materials after doing the market research. I called it "FlavorCore" and bought the domain.
Part of the assignment was pitching it to a board of guest "investors" who ranked your business idea and materials on a scale of one to ten. After pitching, my idea received 39 out of a 40 possible points from the judges (local leaders in the business community). My instructor asked me to form a team within the class to pitch at a regional contest. So I added a few people to my "team" as we took a school bus to the contest in Akron, Ohio. After pitching we received second place, everyone was pretty proud.
None of us (myself included, being a freshman in high school) really thought of our business idea again...
Then a few days ago I came across a product called Cirkul that has received hundreds of thousands of dollars in funding and orders:
Cirkul uses flavor cartridges—Cirkul Sips—to bring flavor and nutrients to water. When a cartridge is inserted into the top of the Cirkul bottle, water flows from the tilted bottle through the lid, delivering delicious flavor to the user.
Founded in 2015, this was years after our pitch, meaning this potential product could have been ours. Moral of the story; Your idea may just be the right fit for the market, don't stop getting after it.