JudgeN said:
TF2 has been at a rock bottom price for years now, like $2.50 on sale. If would imagine most people who were ever interested in TF2 already own the game so I don't think making it F2P is going to really increase the userbase much. Besides they would have to fill COD with some kind of microstransaction for them to make money on the game like TF2 did, I don't see the community accepting that at all.
Despite this conventional logic, it's never done close to the numbers it's doing right now. You can argue it'll be short lived, but I would guess people who were turned off by the game would have quit by now.
These are the numbers in the last 24 hours:
Current Players Peak Today Game
76,744 87,780 Team Fortress 2
49,852 56,009 Counter-Strike
41,517 47,110 Counter-Strike: Source
25,295 27,836 Call of Duty: Modern Warfare 2 - Multiplayer
21,924 23,506 Football Manager 2011
18,800 21,554 Call of Duty Black Ops - Multiplayer
15,688 19,153 Sid Meier's Civilization V
11,774 19,454 Terraria
9,093 12,048 Left 4 Dead 2
6,816 8,041 Total War SHOGUN 2
If it can come even close to holding those numbers, it will have caused a MASSIVE increase in the player base.