As a millennial, I never understood CA’s business model. While I was too young to have exposure to the B2B software sales market, they also had a tiny presence in retail software, so I was always confused about what kind of software they actually wrote. I could grasp product-oriented companies like SAP and Microsoft, but I had no clue how a company with no obvious central product could take in the epic cash flows publicized during their accounting scandal: https://en.wikipedia.org/wiki/35_day_month