How do people make online games like club penguin, runescape, and puzzle pirates?

I can't seem to find a good multiplayer online game so I want ti make one. I doubt i will be able to but if anyone knows how to do it please tell me.How do people make online games like club penguin, runescape, and puzzle pirates?
Ok well those games to a long time to make and had very highly skilled people working on them. You may be surprised but a online multiplayer game is been the so called hardest game to make. First off the reason why people like jagex make so much on runescape is because they have very high ads and some people pay $5 a month membership. I highly doubt that you have the skill and the cash to make a mmo because you must buy high quality servers even if the game is crap. Which is about $10,000 dollars per server. Add it up runescape has 158 servers. There server are also very high quality and would prolly rune $25,000 a piece so I dont think you are going to make an MMO's but you can sure play em.
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they make them cuz they have skills. i kno a multiplayer game u can play. its exactly like runescape its called http://aqworlds.com/ . u cant play it yet because the BETA hasnt released yet. the reason i know its like runescape is becuase i played one of the alpha testing they did.
I have limited knowledge on how to make them, but I do know that jagex made runescape with a new made up script called runescript.How do people make online games like club penguin, runescape, and puzzle pirates?
Because they have worked in college to get how to activate the graphics and stuff, get a degree, and make em.