When I was a contractor in fintech, I did a lot of work for one guy on and off over 10 years. He was always very prompt in paying, and I only found out after so

When I was a contractor in fintech, I did a lot of work for one guy on and off over 10 years. He was always very prompt in paying, and I only found out after some time that some of his clients (big banks) were very slow to pay him. At one point he paid everyone contracting for him out of his own pocket for nearly a year. None of us were exactly poor, but it contrasted with other clients who were happy to pass payment delays straight on to me!