In the days of early computing, it was rare that companies would have a way of communicating with their customers that would scale as the company grew. Everything went into different “data silos” that wasn’t necessarily accessible to the right person at the right moment. When I started my career, I worked on phone systems that were mostly being used by mortgage brokers that usually worked off of lists of potential customers in excel.
Usually the brokers had no insight into how things were going or would go unless they kept adding columns for notes each time they called or emailed the person. If the mortgage broker worked on a team or had a manager – it was nearly impossible to coordinate how things were going because everything was based off of the data or papers even that one employee would keep on their computer or on their desk.