I wonder how long the arcade division will last. I want Virtua Fighter dammit! And I don't mean Combo Mania or whatever it was released for phones.
It's been shrinking every year and now we learn they're moving developers from this division to mobile where they're enjoying massive success.
I agree with Joe that it'll last a while longer but the long term future isn't bright. The Japanese market is bigger than ever, it's just 50% of that segment is all mobile. If I recall correctly Japan has the biggest smartphone gaming industry, or just behind the United States so I fully expect unless console games by SEGA aren't vanity projects (Yakuza) cheap (Puyo) or successful in the West/Japan (Sonic, Miku, Phantasy Star) this is the end game for SEGA Japan.
That being said they clearly have plans to stay in the console space/PC gaming shown by the purchase of Atlus, Relic et all.