While there is no such software, it's easy to scan the top 10 competitors and do this manually
I think you could program
toolhaus.org searches to do this semi-automatically.
Your system, though, assumes that the top 10 sellers are good at their jobs so, by inference, the negative-leaving buyers are just problem-children.
An interesting idea.
Imagination will often carry us to worlds that never were. But without it we go nowhere. Carl Sagan