Deprecation
This Sydney lift wanted a login and was running Windows98 well after it was deprecated
That is always said as if it is an extremely bad thing but for embedded and industrial control systems, not connected to the wider outside world, it's no different to installing anything then leaving it running into the endless future.
Apart from the instances when things do go wrong - and that can happen no matter what is used - it worked yesterday, works today, and will work tomorrow. It is probably more a testament to Windows 98 than detraction from it.