The fighting game genre is in the process of the final stages of its death, only legacy games are still keeping it running on fumes, and even those are starting to fade out. Tekken has maybe one more game in the series before it's done and buried, which will leave SF as the sole remaining fighting game with actual players over the next 10-15 years, and once it finally dies once the Japanese can no longer sustain it, the genre will finally perish once and for all.