Very, very, very few original machines were "joystick on right".
Starhawk
Gorf cocktail
Rally-X cocktail
Those are the only ones I can recall off the top of my head, but the grand total probably isn't more than ten games.
Lots of early games were ambidextrous and had the buttons on both sides, but 2 player games almost universally put the joystick on the left of the buttons, as did every console Nes and up.