Actually, I will. Because really,if Capcom sued for even a small element that was found in Street Fighter II in any other fighting game out there (shotokans, special moves, combos), then the entire genre as we know it would be gone. It's just how genres work: we look at one idea, use it, and tweak it to our own ideals. It's been this way since the very beginning.
I never meant it as ripping them off was bad but it was blatant as hell in most cases but it's always been like that with the imitators but they stand out in most cases. They make unique styles, gameplay features and ascetics.
All of SNK fighters stood out due to its systems
Mortal Kombat stood out for its violence
Killer Instinct stood out from those 3 by being more combo focused.
Virtua Fighter became the first 3D fighter by separating itself from 2D fighters and became its own thing and other fighters were inspired by it and made its own likeness from Tekken, Dead or Alive, Bloody Roar and Soul Calibur.
Darkstalkers created a new style of 2D fighters with air dashes and high offense that help give birth to other hyper fighters like MvC, Guilty Gear and BlazBlue.
And then there's a certain Platform Fighter....