People in here don't know SEGA's massive? They have 2 billion cash on hand? EA by comparison has around 1-1.2 billion. SEGA could have afforded to buy out THQ entirely and are, as far as we know, the top bidder on the bankrupt Index (parent company of Atlus, the makers of persona amongst other games) at $200 million.
The secret to SEGA's success historically, outside their only console success (MegaDrive/Genesis depending on your locale) has been arcades which continue to make them millions in Japan as well as the other half of the company, Sammy, which is the largest producer of pachislot machines in Japan. Pachislot for those of you who don't know are basically pinball machines that you gamble on, they dominate Japanese gambling parlors much like slot machines dominate western gambling parlors.
Not to mention mobile, SEGA is huge on mobile, their f2p Sonic game has nearly 15 million users IIRC and the port of the first game did over 8 million on feature phones. Not even smart phones.
As for console/PC IP, they have Total War, Company of Heroes, Football Manager, Phantasy Star Online 2 (hugely successful in Japan, not available anywhere else, yet), Yakuza (massive in Japan), Sonic (over 80 million sold on consoles since 91) and Hatsune Miku (rhythm games featuring a rather popular Japanese computer idol who sings with a synthesized voice). They also have some other franchises that do moderately well, a Japanese only soccer manager for handhelds, Virtua Fighter (makes most of its money in arcades but does ok on consoles too), Virtua Tennis (widely seen as the best Tennis series), Shining Force (which has been ruined now) and the occasional one off title overseen by their Chief Creative Officer, Toshihiro Nagoshi (dude behind Daytona USA, Yakuza, Binary Domain, Super Monkey Ball).
SEGA also has a toy division in Japan and owns multiple animation studios, including Tokyo Movie Shinsha, who is probably most famous in the US for animating the
excellent animated Batman series in the 90's. They also own a CG film studio that's currently working on a
Space Pirate Captain Harlock movie, that studio is called
Marza Animation Planet.
Also they used to make fantastic games at their Japanese studios, I wouldn't say the quality has fallen overall but they've become more western centric and as an old school fan of theirs I super miss the likes of Jet Set Radio, Shenmue, Panzer Dragoon, the old (and better) Sonic, Shinobi, old Shining Force and Phantasy Star, they made fantastic games at SEGA of Japan. Still occasionally do but it's a lot less common.