The economy dies, the whole point of one game type dies, such as sector. All people are at the max level, people don't use gigas, gigas die and lose all value. No one needs training, the whole point of team work on certain sectors die. Most games actually require multiple people to play together, Massive Multiplayer online role playing game (MMORPG). If you didn't need help from anyone or need anyones aquantance on anything then its a real pointless game, if you look at BOTS!! the game relyed on people to trade items to fufill their wants and needs. But if you look at Old BC, the exp rate was like 10x or something everyday, so people at level 1 just soloed Level 1 Training camp and got to Level 15 in one try. So people wouldn't even bother asking others for help.
All the high Level players would be very gay anyways, many examples but my fingers are tired. >__>.