Well, the last time I went into an Arcade (about a week ago, a big one with only video games), there are not much people, almost all the games there have better versions or ports on console, some even really outdated. The latest one being the SEGA MMORPG arcade (key of avalon or something like that), the others are Konami, Namco or Taito's racers which is way behind the graphics on consoles. The exception is Initial D Arcade Stage V.2 which is definitely looking a lot better than the PS2 version.
I definitely know console is taking over the arcade scene here, but I can only know the supposed situation (just supposed, if it is really that bad I doubt the game center can even survive with such a big avenue) where I live. I wouldn't doubt Sammy, a profit making company, who want SEGA to focus more on arcade. I don't think the reason that Sammy bought the major stake just to screw SEGA because of the failed deal.