I wondered for about 1.3 seconds. At the very least, he is getting the best market research right here - for free. When the MMM and Brady Center find out gun owners don't like it, they will work to make it mandatory.
(Did you ever see the Maryland politician Glendenning at his Million Mom March HCI media event where he was touting the "Glock Lock" insert, and was on film trying to get it off, and couldn't, and about 5 cops had to confer to help him? They practically had to take the Glock apart and put it back together. Glendenning was explaining how all MD cops were going to use that type of "safety " feature, which would be mandatory on all new guns sold in MD. The NRA made a priceless video clip from it.)