I would be willing to bet a large sum of money that those machines are corporate owned and running legacy systems that are hanging on by a thread.

Every year someone talks about replacing Ol’ Smoky but the new system would need to go through validation and that costs time and money so they limp along for another year

Not all of them, Dystopia for example was allowed to stay as is because of accessibility features that the native app lacks. It was even working just fine during the recent outage.