Hmm, but Street Fighter most didn't ever play and found pretty bad. Street Fighter II maybe, but what really set fighting games into motion was Mortal Kombat, Tekken and Marvel vs Capcom. Street Fighter reached a broader audience by being ported to consoles.

Dead or Alive and Soul Calibur were great fighting games too which you could easily say pushed it even further in terms of custimization (since prior to that, it was merely costume/color scheme swaps), but the thing with WoW is, WoW got popular but it's design pretty much ruined everything that made MMOs fun or great, then every other new developer directly copied that design, so yeah unlike blaming street fighter, you literally can blame WoW for what happened to the MMO market.