Comment by thewebguyd

> Usually industries that stick to very old system did so because they didn't want to invest resources in the migration.

That can be the case, but there's also a lot of instance where it's not a matter of not wanting to invest, but that being stuck on an older system is the only option until a larger component also goes EOL or dies and cannot be repaired.

I see this all the time in manufacturing. User control interfaces that run on Windows XP or 2k. Machine is still great, can still get parts & repair it, but the software has long ago since stopped being supported. The manufacturer isn't going to spend 6 figures to replace a machine that hasn't fully depreciated yet.

In these instances, you just air gap it off and you're fine.