Given the poor technical choices made regularly in old corporations, I'm guessing they had no idea what they got themselves into.
That or it's their franchisee's problem and they don't have any incentive to fix it.
That or it's their franchisee's problem and they don't have any incentive to fix it.
If it was a critical product, they'd have multiple machines per store, just like the friers (often way more than is needed).