I'm not the lawyer but I can give you a basic idea.
The Original DoTA was created based off of the character models and engine from Warcraft 3 (which is all Blizzard property). When DoTA was then picked up by Valve, Blizzard could have completely butchered DoTA2 until it was unrecognizable. Instead of destroying the game by assertively fighting over each and every possible character model and skill animation they instead went with the more reasonable approach of protecting just their own work and allowing Valve almost unprecedented freedom to keep a lot of characters that honestly they would have thought impossible to keep.
DrZeroH359 karma
I'm not the lawyer but I can give you a basic idea.
The Original DoTA was created based off of the character models and engine from Warcraft 3 (which is all Blizzard property). When DoTA was then picked up by Valve, Blizzard could have completely butchered DoTA2 until it was unrecognizable. Instead of destroying the game by assertively fighting over each and every possible character model and skill animation they instead went with the more reasonable approach of protecting just their own work and allowing Valve almost unprecedented freedom to keep a lot of characters that honestly they would have thought impossible to keep.
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