As someone here said, don't trust a burglar to install a security system. Google is doing this to make sure their ads will be displayed. If chrome has built in

As someone here said, don't trust a burglar to install a security system. Google is doing this to make sure their ads will be displayed. If chrome has built in ad blocking many people won't feel the need to install ad blockers that block all ads. Another point mentioned is that this could be used in the future to hamper business of their competitors. It is very unlikely that this is why it was created, but don't forget that Google is a publicly traded company, if they will be pressed against a wall they will use anything available, and this could cause a serious damage against their competitors.