Ain't that the truth. It's common to see businesses using systems from the 90s in my line of work, or managing crucial business data and workflows in spreadsheets. Once companies establish a workflow they're often very hesitant to change it due to all the dependencies.
And in a lot of cases they're making the right call. Change is incredibly expensive and risky and if the only real payoff is "it's slightly faster" that's probably not worth it.