There are quite a few semi-retired executives and management consultants who become "turnaround" experts. Usually they associate themselves with private equity

There are quite a few semi-retired executives and management consultants who become "turnaround" experts. Usually they associate themselves with private equity firms or semi-formal investment syndicates. But they tend to focus on more established companies. A more startup-oriented version of this would be "Entrepreneurs-in-residence" at VC firms. They claim to be developing ideas, but in reality they have some association with VCs who want to keep them around for whatever reason so they just hang around until they come across an idea and then the VCs invest on the basis that the E-i-R is the "lead managing entrepreneur." But like most women, they tend to be suspicious of anybody that wants to have anything to do with them and tend to go for people/companies who don't even know they exist. It's a sick world that we live in.