Turns out it takes more than being great at coding to build a startup. I'd to learn Marketing, Pitching, Emailing etc. skills in my journey which I never thought about before starting up whereas, I thought building a good product would cover that part.
This reminds me of my days teaching test prep classes for Kaplan. At some point in every Kaplan teachers career, there came a point when you'd do the math and realize that Kaplan was charging students $100/hour but only paying you $20. Inevitably a few of the best teachers would try to go out on their own. They soon realized that getting students took a lot of work - putting flyers up on campus, working your network looking for referrals, building a word of mouth reputation. Most ended up failing and coming back or moving on to something else. There were a few that made it big (e.g. Robin from TestMasters) and it turns out that these were not necessarily the best teachers, but they were definitely excellent marketers.