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As the title says, Innovation = success. Clones seem to be incapable of achieveing the same massive success as innovative products.
Let's look at Apple, they were the first to have touch screen MP3 players and phones, they sold exceptionally well, and then opened up huge markets for touch screens, but compare Apple's products to the touch screen products that followed Apples success and they don't even come near Apple's critically or commercially.
James Cameron gave us Avatar, the first movie with the amazing 3D technology we have today, it made 2.7 billion dollars, making it the highest grossing movie of all time and was nominated for loads of oscars, those that followed using the same technology again didn't come close.
World of Warcraft brought the MMO genre to the masses, selling 50+ million copies of it's games and retaining 10+ million subscribers for years now, those that tried to clone WoW didn't come close. The MMO genre was unknown to me before WoW, as it was a very small genre of gaming, WoW brought so many people into the MMO genre it can be classed as innovation.
Harry Potter dragged the fantasy genre back on top, becoming one of the biggest selling book series of all time, over 400 million copies sold. Suddenly childrens/young adults fantasy about wizards become popular, none of them were met with the same praide. Same can be said for The Hunger Games and Twilight, which brought us a post apocalyptic world and romantic vampires, those that attempted to do the same didn't do as well.
I could keep going on with things like this, my point is, things that do the most critically and commercially well are things that aren't around right now, not clones of already popular things.
Coming back to the MMO genre though, doesn't this prove that developers have to start taking risks, and creating something new rather than attempting to jump on the bandwagon of something already popular? Clones might do well, some very well, but none ever seem to come close to the product they are cloning. Please prove me wrong if I am.
Sorry about the rant, it's something that's been on my mind today.
Edit; My definition of the word innovation does not solely mean creating something never before seen, that is only one meaning of the word, it can also mean taking something that already exists and doing something drastically new with it, thus innovation.