Oh, I didn't mean he should give up the value or anything. The point about capital gains tax is somewhat fair as well, but I think there could be ways around that. I'm not a finance expert, but maybe the capitals gains tax could be cancelled and his investments moved to a broad canadian index fund or something.
The problem with a blind trust (as I understand it) is that the existing investments aren't going to be changed immediately or even soon, so he still could profit via policy decisions based on what he already had invested.