[moron123]

I think you're idea of a niche is a little too broad. SMB is not a niche, plumbers is a niche. Are there accounting software, or CRMs made specifically for plumbers? Probably. But you can make a better one. Don't like plumbers? Try electricians or roofers. How about solar panel installers? How about installers of a specific brand of solar panel? There may be many SMB softwares, but if you pick a niche, you will find less competition catering to that specific customer.

[Zenzero]

You're leaving out the big catch though, which is that if you don't have experience in these industries, the software you make will probably be terrible. The winning move is if you are a plumber that can learn software engineering, not the other way around.

[xwowsersx]

Ah, that's helpful. You're right, what I listed are not niches. I'm wondering if having some knowledge about a particular niche is necessary to determine whether a tool for that niche, such as a CRM for plumbers, would be distinct enough from similar tools for other businesses. Or do you think you can generally assume that there will always be some way to tailor a tool to a specific niche?