It's not very clear what exactly your looking for - are you looking for a product idea? What it takes to bring a product to market?
Ideas are a dime a dozen
People have ideas every day - what matters is the execution of the idea, the passion behind the idea and if your idea fills someone's needs. Some ideas are poorly executed and those services / products fail quickly (unless of course people need it and theres no competition - then most would have no choice)
Building a product will be the least of your concern
Your biggest concerns will be how will you market the product; who will use it; who is your competition and what price point do you need to hit for it to be profitable.
Profitability completes depends on how much money you need to spend to maintain the product verse how much money you can bring in. You might have nothing better to do with your time, have access to cheap servers and low server needs and profitability can be high. You might have high server expenses; need to spend a lot of money on marketing and your profits might be low.
If your not passionate about the idea
Abandon it. People will see the passion you have for your product in your product. If your doing it just because someone told you you should and your not really into the idea; it'll show. If you really believe in the product and think people can benefit from it, give it a try and see how far it goes.
This will not be easy
People fail at this every day. I've personally failed at least half a dozen times (I've lost count). Some due to lack of passion for the idea; some due to lack of funds to market it properly. And some due to not judging the market properly. Every time I've failed, I've learned ways that didn't work. If your up for it, you try again and see what happens.
After your figure out if people have a need for this; how you'll find those people and what it might cost to bring it to market; then you could start building it. You could start building it before all of this of course, but then it becomes a risk of time invested vs failure. If your ok with investing time in a product that might not go anywhere, then this is a moot issue.
Overnight successes are far and few between. Many people fail. The stories you read about abc company being bought for millions are unicorns. Their winning the lottery. It doesn't happen every day and most of those people have failed in the past, learned from their mistakes and tried again.