It's what easilly available, the kiddies must have their visual fix, and even most of your average 90s arcade kiddies yell about 'filling the screen'.
Style-wise, that thing looks like a 70s vending machine, or 70s space theme: angles and hard lines.
There's probly vents at the top.
The funniest thing to me was the middle stick...with only two buttons....jammed between the left and right players. It's the easiest solution for accomodating single play, though....