If charts are what I want, I head over to tradingview. If its company data then that's finance.google. I am very curious to know what's the product roadmap for the future?
Could you explain a bit - users used it and then stopped using it? Or, nobody discovered what you built?
If earlier, did you try to find out why users stopped using it?
If later, how do you expect me to find this great product that I don't exists yet. You didn't even provide a link here.
Famously, before Ford built cars, he asked users and they said they wanted faster (horse) carriages (cars were too expensive, clumsy and broke down all the time). Thankfully, Ford didn't set out to make carriages or the horses faster.
This might help. This is in no way comprehensive, but rather just to help you get unblocked, and that, age has less to do with creative ideas, than you are making it.
1. Industries that disrespect their customers. Say, you had a bad service/sales rep experience. Then you tried to switch, but found out that every other large competitor to this one is as bad. Probably the reason why there are so many banking/financial services upstarts in the last couple of years.
Caveat - usually these businesses are good at building high switching costs into their products. How many times have you thought of ditching your bank, but have never got around to it?
2. Fat and thin margins. If everyone is enjoying a fat margin, they are most likely colluding in their industry, and have some kind of (in)formal association barring anyone else to entry with lower price. Can you legally go against that trade association. Technology helps in leap frogging in these situations. Thin margin businesses (usually) indicate that all the efficiency that there is to be extracted has been. This can still be disrupted, if your tech can find new ways of doing things.
Fedric Tudor started the whole ice industry by cutting pieces of lake in the north and shipping them to south. People weren't even used to having ice in their drinks. He created a whole new market and industry.
This might have been said a million times, most ideas look bad on the surface. What makes them good is the execution. :)