Not unusual in retail.
Worked as a security consultant for major retailers and whilst the high ups want the latest laptops, tablets etc. When you try to explain to them that they their entire Till estate is running obsolete software, can't be patched etc. the usual response is "But it still works OK, so what's the problem?". Of course most of them have now been left so long that a software upgrade would also require hardware and the project costs run to £10-100m's. An of course companies like NCR make a fortune from the additional charges made from supporting older equipment.