There’s a market for everything. The “shit customer” would have hired someone. Sure things could have gone to shit and they wouldn’t be paid, but they didn’t, and there is a living to be had serving this market segment. Every contracting business has difficulty with AR, stereotyping often isn’t even particularly acccurate. Suffice it to say there is a business to be had in catering primarily to difficult customers.
> stereotyping often isn’t even particularly acccurate.
While I agree that it's difficult to predict exact credit risk based upon customer personality, explicit threats not to pay you like exist in the story -are- a bit of a signal that there may be a risk of nonpayment.
Depends on what you mean by business. The nature of that type of business is that it's not very predictable or repeatable so you get one small chunk of business but ultimately it's not the kind of business (even a consultancy who's job it is to throw hours into the fire) you really want. Scaling that out would be death by 1000 papercuts.