It depends how you look at things.

You can look at it as mere circulation of money. And let's be clear, this is circulation of money, not redistribution of wealth (as they are merely exchanging one asset for another at market rate)

Alternatively, you could see it as this individual making a decision about what humanity should do with scarce resources.

Should we direct them towards helping those in need, or to manufacturing luxury automobiles?

With great wealth comes great responsibility.