Do you have examples you can point to where this has happened? I would be interested in cases where this kind of approach has been taken, as my intuition is that Troy’s service wouldn’t make this significantly easier or cheaper.
Imagine you want data on a specific individual. You can locate and obtain ALL available data breaches, then search through each one individually looking for references to your target. OR, you can enter their email into a search and get back a list of which SPECIFIC data breaches have information on your target AND the types of information included in the breach. This narrows the scope of effort by orders of magnitude.
How does that not make it significantly easier and cheaper?