Memes belong to no one. Memes have no value with out someone else looking at them. The greatest honor to a meme is to be shared. Therefore you cannot steal a meme, because a meme gains value when reposted.
>>5225>a meme gains value when reposted
You're correct, to an extent. Once a meme reaches a certain level of repostedness then it starts to lose value. This is known in the field of Memetics as the "law of diminishing returns".