30+ years ago, You had to be a -lot- more careful about how you handled releasing software. Your stuff was in boxes on shelves, most people didn't have internet access to 'download an update' so fixing anything had a long tail support cost (i.e. paying for the media containing the fix and shipping).
But there's a fine line. As an example, If your shop is having a vendor do brand new stuff, -compartmentalized from your other stuff-, using technologies that are actually out of support vs an in-support version is a free/zero effort update versus using the outdated stuff... Something went wrong on the management side.