It is the person who has experienced the problem that will fully understand the nuances of the problem and the potential users of the solution.
An alternative question might be: “how does one engage and learn about problems in your industry?”
I understand that this is difficult, but this is what investors want to see.
A related problem related to data creation and subsetting is that one person (and practically nobody) knows the entire data relationships between subsystems, but you still need them to create your data.
There are plenty of tools that lets you plan, organise and bikeshed over all the things you want to do, like Jira, but I think a much bigger efficiency booster would be one that helps you decide what not to bother doing at all.
This would enable DIY kitchens to be sold to a much larger market. Alternatively small kitchen installers could handle the sales and installation. Manufacturing can already be done by many 3rd parties. The expensive part is in design.