Historically, the video game market can only support 2 consoles. For example: In the console wars between the SNES and Genesis, numerous competitors tried to take a hold, including NEC, SNK, and Atari. All failed. More recently, Sega dropped out after fending off Nintendo and Sony for years. So: which company do you think will make gaming history by painfully saying farewell to its fanboys?
I say Microsoft, because Sony is not going down, and Nintendo learns from its competitors a lot faster than Microsoft. Example: When faced with genres Nintendo didn't have under its belt in the NES era, they came up with innovative products like Mario Kart, F-Zero, and Star Fox with their next console. These titles also showed off the strong points of the console. However, Microsoft makes a lot of old mistakes by launching an expensive console with few and boring exclusive titles.