If the value prop is that it's nice to move the port adapter dongle into the chassis rather than having one dangle from a port, so it's an ergonomic improvement

If the value prop is that it's nice to move the port adapter dongle into the chassis rather than having one dangle from a port, so it's an ergonomic improvement you're sold on, sure. I'm not saying that can't have a market. But if you can only buy the dongle from one vendor, it's going to be more expensive than if there's a market where multiple vendors compete. It's that "you can only buy the adapter from Apple, and it's really expensive" thing, just moved into the chassis. Hence the question which one of those we're looking at here, and it was kindly answered by a rep above.