"In 93/94, Atari sued Sega for violating 70 different Atari-held patents. One of which, I remember people mentioning at the time, was for using that off-the-shelf controller port in the Master System and the Genesis. They settled out of court, with Sega giving Atari $50 million in cash and agreeing to buy another $40 million worth of Atari stock (so basically, Sega lost $90 million).
That’s why everybody stopped using that port."
I wonder what the other 69 were.

