"Executive search and recruitment firms" is an industry/segment, though, right? I thought this comment was more about specializing in some particular niche tech thing wrt the "just start a open source project guysss" comment
Specialization works by vertical or by function. Or you can actually mix them if your TAM remains large enough.
Yes, the parent was referring to technical specialization. But my point is either works. Especially in the context of what OP is trying to do which is "automation" - technically very broad.