We don't have to leave your stated examples to find disproof of your pet dichotomy. SF4 had the same kind of evolution while selling versions like they still came on cartridges. It's possible. You just don't like it.
Unless you mean one single byte of FighterZ being different would be a completely different game, in which case, just, shut up. You keep trying to treat any change what-so-ever as equivalent to the whole game ceasing to exist. That's horseshit. You need to stop.