The problem with steelies is that hubcaps have become horrendous. What was once a nice sturdy metal 'cap has turned into a POS plastic one that breaks, cracks, the paint (if painted) falls off.
They usually look like shit because the manufacturer tries to make them look like alloys and fails, because the hub cap only covers 1/3 of the steel wheel behind it leaving the wheel exposed for all to see.
And they fall off, because people don't know how to put them on right, and the same people buy the gross generic ones from Wal-Mart and put them on wrong too!.
Plus with the increasing wheel sizes these days it would be hard to make a 'cap for a 20" wheel......the only place I've ever seen a 20" steelie is on a Class 8 truck.