He doesn't need to be so rich to buy that amount of bitcoins. He only needs to be an early adopter who did not falls for the various scams that happened. Though that sonds very rare...
hasiramasenju
So what's someone with BTC1000 called? A thousandaire? There's got to be a better name. 'Bitcoin Whale' is just so meaningless and some people don't consider BTC1000 a whale anyways.
What should we call a Bitcoin thousandaire?
Actually I think if someone has a million yen, pesos or so doesn't matter much. Calling themselfes a millionaire would sound like betray since what they actually would have would own would be way less. Someone asking back would only be disappointed to hear that he is a yen millionaire. Which would be a embarrassing for the yen millionaire.
So normally all real millionairs are said to be dollar millionairs. Then everyone knows whats the value that person has really is worth.
So taking that into account then someone with 1000 Bitcoin is no millionaire yet... or anymore... maybe price will go back to $1000 in some time...