No they don't, you stupid shit. They are making more money now as a developer than they did as a console maker. The Dreamcast nearly bankrupted them, and that was actually wildly successful compared to the Saturn, which apparently only "real gamers" liked. I guess the 10s of millions more people buying up Playstations and N64s weren't real gamers then.
As a developer, they release games on all 3 systems. Much more money to be made with games (where you turn a profit on every sale) than systems (where you generally suffer a loss, but hope to make it up with the sale of games). If they were to jump back into the race, they'd face STEEP competition from all three rival consoles. 4 is too much for the market. Worldwide, the Wii is dominating. Nintendo's market penetration has expanded back to the days of the NES. Everyone and their grandma ha a Wii... literally. The Wii has drawn more people into gaming than ever thought possible. And if Swga makes consoles again, they'd have to stop sharing their games with that platform, which means a huge loss in game sales while trying to re-establish their own share in the market.
Then for the more hardcore crowd, you'd have to compete with the PS3 and Xbox. These systems have power and a massive library, respectively. No one's gonna be able to break into the market with that in your way. And if you're think Japan, the Nintendo and Sony have it locked down tight there. Even the Xbox is creeping in over the last year with their flood of SquareEnix JRPGS.
Think before you post.