Yes this is exactly right. There is an industry of chrome extensions that exist to change the search engine to something truly unwanted (yahoo search anyone?) so that the extension author can extract rev share. They often advertise the extension as something else to trick people into installing. The target is often kids. As someone who worked at Google, I was surprised / shocked to see how many kids get targeted by these extensions. “Want to play this cool game? Just install this extension.” It is a really problematic thing without an obvious solution. Google has to fight against unwanted extensions but absolutely shouldn’t hide behind that acting like it is okay to punish competing search engines in the process.