It depends whether you're building something for the utility of it or to make money. You can do the latter in a crowded market as you said, but often if you th

It depends whether you're building something for the utility of it or to make money. You can do the latter in a crowded market as you said, but often if you think you would like to build something for yourself, which is often the best way to build a product, then it's certainly possible to be satisfied with something that already exists.