Are SONY the first gaming company to have 4 systems on the go at the same time?

[TrevDaRev]

MontanaHatchet said:

Nintendo had the Gameboy Advance, the Gamecube, the Wii, and the DS all on the market and selling around 2006/7.

Thanks for clearing it up. They'll do it again sometime in 2012, DS, Wii, 3DS, Wii U.