Ask HN: What does it mean if others have failed doing what I'd like to do?

I have always wanted to provide a service online, and I would also like to make money while doing it. So far, there were two ideas that got me excited, both times I thought they were completely original and on the right track. However, both times, while doing research I've found that other people have had the EXACT same idea (in one case, their execution was even better than what I had planned) and then abandoned the project.<p>Should I take the hint and move on from these ideas or does this not mean much?