I hope the "Nintendo buys Sega" or whatever talks stop with this. This makes the Sega entity pretty beefy without Sammy.
More interrestengly, the Sega Holdings could attract different shareholders who weren't interrested in the Pachinko, Gambling, Resorts business of Sammy. Could be wrong on that.
Also, here is the "Sega Games" page:
http://sega-games.co.jp/csol/company/about/The non mobile business , is referred to the consumer online company. PSO2 and the staple arcade mahjong franchise are examples of the Online PC business I would guess they are reffering too.
All well and good, but I guess they don't get the memo that the Internet has the advantage of being worldwide...! Especially since they want to excite the world ever, or so the PR says...