I can't give specific advice without knowing more about the idea, so I'll keep it general.<p>I think pretty much whatever you do, if you do it long enough, at some point you are going to discover there is a competition. It is a validation that your idea makes sense.<p>In your case you discovered it early, even before you started. But does that really matter? What would your decision be if you have been working on the project for 1, 3 or 6 months and then discovered it? I would ask myself that question in your situation.<p>If somebody had the same product idea, it is not like they "own" it now and you are not an original anymore. If your intrinsic motivation for doing it is strong enough and you want to do it long-term, it shouldn't really matter. Of course, I am assuming here your competitor is also in the early stage and has not overtaken 90% of the market.<p>You don't even have to differentiate in the beginning - why would you? You can both offer the same service - there are Pepsi and Coke, Intercom and Drift and they basically offer the same service.<p>As the time progresses, it is likely both of you will differentiate more and more, and orient toward a specific niche of the customers.<p>You even have an advantage coming in the second - you can learn from the existing solution and make it better.<p>So alltogether, I would say that the main question is whether this is something you personally want to do long-term or not, whether you have the internal motivation for it.
If it was just a "quick" idea you had and the main motivation was to make a quick buck, then probably not. But if this is something you are interested in and want to keep doing it, then why not.