An idea's existence doesn't mean you can't build it. It's a good sign that it's been validated. Since you're not shooting for the moon, even more so. I would p

An idea's existence doesn't mean you can't build it. It's a good sign that it's been validated. Since you're not shooting for the moon, even more so. I would pick something you're interested in, which you can do for a long time. That'll sustain you when you can't get customers or your product misses the mark.