Stuart Semple changed his name to Anish Kapoor, because only Anish Kapoor has the rights to use Vantablack for artistic purposes.
I think there might also be export restrictions, but I'm not sure.
I love the petty little fight over the blackest black and pinkest pink or whatever that whole drama is. It's hilarious.
Also
>Semple developed a pigment called the "pinkest pink" and specifically made it available to everyone except Anish Kapoor and anyone affiliated with him
Anish seems like a bit of a dick