An old story. I used to work for Fox Home Entertainment (CDs etc)this is 20+ years ago. And we had proper DOS running on old machines. We used it to do all our finances (including all of Japan, Asia sales). Most of the money we made on movies like Titanic were tracked on DOS. Until about 2003 if memory serves me where we moved to SAP. Why this was worrisome was how easily fraud occurred. In my tenure there $5-10M was stolen. At the time sent to companies in Brazil. I'm still surprised by larger firms where they keep these things alive to retain the data. CocaCola did it. A few large Insurance firms too. Crazy.