100 million? Doubt it. Now, it might get pretty close to that number given how much Sony is dominating, but not to the point that it will reach that number. Especially if the PS3 is supposed to be out by 2005.
Also, while competition isn\'t making huge strives as of yet, they will still be around to take some market share that will also prevent Sony from reaching 100 million. Though I guess, its not impossible for Sony to hit that number.