Quote from TheOatBaron
I don't believe that analogy is relevant at all. I see it as you buying lemons from the store (Minecraft) and you re-sell it at a lemonade stand (server). The base lemonade is free, but you rely on the small amount of people who will buy the add-ons, described later (F2P players and P2W players). But at the stand, you add and remove a lot of things to the lemons (Adding in plugins and mods, removing certain aspects of gameplay). You decide that you also want to sell other things in addition to the lemonade for an additional cost, such as more lemons, sugar, and/or an umbrella (paying for items/ranks/commands). Now imagine the whole block made up of these stands (All the Minecraft servers). People can choose to go to your lemonade stand, someone else's lemonade stand, or go home and make their own lemonade (Singleplayer).
But then one day, the head of the lemon company (Mojang) strolls in and says that because you are using their lemons, you can no longer sell any add-ons, which your entire operation runs off of.
This comparison isn't truly related to the current Minecraft situation since Minecraft is a game (a full product) while a lemon is just an ingredient that requires other food to create something tasty (a basic concept). Sure, you can try to eat a lemon on its own but its a FRUIT. There is no way someone can copyright/limit it's use since anyone can grow a lemon tree. A more suitable comparison would be chip bags.
Let's say I decide to sell some chip bags to the public without a proper sellers permit. Obviously I would be in trouble if I get caught since I'm selling something that I don't own the rights to. Same goes to Minecraft. Mojang has made the game, therefore they have all the rights to make some terms and conditions and we have to abide by it whenever we like it or not.
Take this scenario for example: Let's say I download a pokemon rom and decide to modify the rom to create an original pokemon mmorpg while charging people money to play it. Do you think Nintendo will care if I said that "it costs a lot of money to run a server and i created custom plugins to make it unique so you can't sue me"?