You could also ask: Is the market saturated with electronic calculators or guitars. It's depend on what you do with such a tool and if you are able to decide between the several variations. And sure there experts and there are experts. Some are better to impress other are better in doing.If you make a good and honestly job you will not fail. Mostly.

I love your answer. I always use restaurants as my example! If you want to open a restaurant, do it! Don't let the fact that there are already a lot of restaurants stop you! (Or don't open one!)