Certainly it did, but not necessarily in the ways that Microsoft promised. Xbox 360 was a great gaming device, one that Microsoft continually improved upon in a way that was unheard of in the game business until this generation. It constantly added significant new features, upgraded the user experience and moved from an also-ran to a major player, forcing the competition to follow suit. The PlayStation 2 you bought in 2001 was the same exact machine in 2005, but the Xbox 360 you bought that year would be unrecognizable now. Xbox 360 did change everything.