Partial solutions are a market signal.

When multiple teams independently build tools that address different pieces of the same problem — without any of them addressing the whole thing — that’s evidence the problem is real and the full solution hasn’t been built yet.

You can see this pattern in commercial real estate AI right now. A scraper-based MCP server for searching commercial listings. An AI platform for environmental due diligence. A SaaS tool with nine DD modules. DIY guides for setting up Claude with your deal documents. Each of these is a real product solving a real piece of the problem.

None of them are the integrated whole.

The listing search tool finds deals but doesn’t analyze them. The environmental platform handles one of eight due diligence workstreams. The SaaS tool has the right scope but the wrong architecture for technical users doing their own setup. The DIY guides work for people who can follow them.

The partial solution signal tells you three things: the problem is validated (multiple teams found it independently), the market is ready (people are paying for the partials), and the full solution hasn’t landed yet (otherwise the partials wouldn’t be getting traction).

The risk with partial solutions is mistaking coverage for completion. “There’s already a tool for environmental DD” doesn’t mean the DD problem is solved. It means one slice of it is served, and eight slices are still open.

When you see partial solutions multiplying around a gap, the gap is getting crowded at the edges. The center is still empty.

Build for the center. +++