Permission is hereby granted ... to ... sublicense ...
Actually:
"sublicense: A license giving rights of production or marketing of products or services to a person or company that is not the primary holder of such rights."
That doesn't actually mean, in the context of the BSD license, they could legally change the license from that given by the primary copyright holder. It only means they are given the right to attach a EULA, or suplementary license, to the product.
- Ender