I think the approach here is a bit backwards from what the rest of the world has always done to a degree. Software Development is a specialized skillset, not unlike a trade. If we are solving a problem for someone with software, we are essentially like a typical contractor you hire to do something at home. What you're doing here is trying to convert that into a scalable product under the assumption that many other might also have the same problem. This might be true, but as in construction, the product makers aren't selling to the consumer directly but rather the tradesperson.
Every "tech" company is not actually selling tech, but rather is selling something tangible, a product of sorts. Software developers are selling their labor.
If you want to find out the scalable product or solution in a particular business or domain, I think you really need to be a part of that industry or have someone who is.
Otherwise, even if you end up developing a SaaS that satisfies the needs of 100 customers, you won't really ever truly be able to scale. So my suggestion is start talking to friends and family in other industries.
Every "tech" company is not actually selling tech, but rather is selling something tangible, a product of sorts. Software developers are selling their labor.
If you want to find out the scalable product or solution in a particular business or domain, I think you really need to be a part of that industry or have someone who is.
Otherwise, even if you end up developing a SaaS that satisfies the needs of 100 customers, you won't really ever truly be able to scale. So my suggestion is start talking to friends and family in other industries.