It sounds more like a feature for AngelList/Gust/Crunchbase/CBInsights than a viable business by itself

Hundreds of small one-off sales to make $150k with an information product that needs updating all the time, can easily develop a [possibly undeserved] reputation for being "wrong", and a realistic prospect of competent bigger names developing a similar service to give away for free sounds like the absolute worst business case for a B2B play.

It's a more attractive opportunity for someone wanting to establish a name for themselves in the startup/VC ecosystem for other reasons though.