Matchmaking took upwards of 10 minutes. Maybe they could capture a core audience but all that waiting would alienate even more people. Increasing the wait time even more. They could have invested more money and re-release it, but how much money would it take to overhaul the game. And there is no guarantee, that a 2.0 would be played more. So giving it up is probably the best solution, not burning even more money. Keep in mind, it costed about 400 million $ to make.