Yes. They make it by playing games that support their preferred gameplay. Games that go for instant gratification get filled with that type of people, hindering socialization. To imply that the game's structure is not relevant toward how much people socialize is completely delusional and means you do not understand game design. Mechanics differences are what make SWG a social game and make Modern WoW a "sit in city and queue all day" game, or what makes EVE so corporation-bound while making games like Rift solo games. A game needs to promote grouping to actually have any socialization besides that forced by guilds and the "hi, bye" you see in dungeon instances. Not having cross-server LFG, or LFG at all, is one of such important features. So are group quests. So is game difficulty. So is a crafting interconnectivity. Gamers are efficient. If you don't make grouping efficient, it will not occur.