This might be a controversial opinion, but this might be a rare scenario where the GaaS model is a positive factor in pushing Japanese fighting game developers into improving their netcode. The traditional way of selling fighting games as complete packages with unlockable costumes, colors, etc didn't provide developers much incentive to go beyond the delay-based netcode they've been using for years. Sure the game's netcode might be garbage, but by the time a player figured that out, the developers/publishers got that player's $60.
As fighting games move towards season passes and micro-transactions, developers will need to keep players engaged and playing to want to fork over additional money for costumes, stages, etc. As online play is the bread & butter for the community of long-term players, it becomes developer/publisher financial interest to get that netcode as a smooth as an experience as possible.