You can do that, but you probably shouldn't. Would you buy a coin that someone can (and has) just take away that simply?
It's possible to fork a coin and rob somebody, but why would anyone "invest" in a coin when it's been proven that it's simple to just take them away?
I believe extenuating circumstances such as Paycoin, where its birth was created within a company that has failed at levels in which any board or investor would have crucified long ago.
A [hard] fork is a fork, and should not be taken lightly. It's not like a fork will happen every day and there is the potential of having multiple people put on the "blacklist". Getting a fork to get integrated smoothly is NOT an easy task. I helped Dogecoin when AUXPoW was done, and let me tell you there are a hell of a lot of more people than you can imagine just on the non-person side to get a hold of to ensure it goes over well.
So perhaps I should tell you to go fork yourself (a little fork joke

).