Sometimes its disappointing to see the negativety and the "no one can do this" ideas from people. Its definitely possible. No I'm not going to follow your "don't" suggestion. Its interesting that most people assume that no one can make something just because they can't or because it seems too much of an impossible task. Anything is possible.
No it isn't. Go make Spiderman 4 with a home movie camera in your kitchen. Then make an MMORPG that will attract more than a handful of players.
Technology is irrelavant. MMORPG to attract more than friends and family requires content - models, animation, levels, voice acting. Also infrastructure: servers, administrators etc. This stuff is expensive. AAA games have larger budgets, teams and timescales than AAA films.
People are not making assumptions just because of anything. People know what's involved.