This. The business folks at Atari weren't shortsighted like the ones at Commodore; adding a MIDI port alone to the ST contributed to place that machine into its own music production niche ("I want a Mac but can't afford it") which prolonged their life for years after Atari ceased production. Adding a MIDI port to the Amiga would have been trivial, I built and sold several at that time on local BBSes, and the cost was like a few bucks: one 74ls04, one photocoupler, one voltage regulator and a few analog parts; making it internal would have been even cheaper due to not having to add a serial D25 connector and an enclosure, not to mention the parts purchase in the ten of thousands. Unfortunately the business folks at Commodore constantly cut corners by removing what they thought not important for what they still thought of a game console, so one would buy a desktop computer only to find it had no hard disk and real time clock: boot from floppy and set the date/time at each boot? Come on! One would wonder how it could not fail.