I wouldn't really call it free money, as after Chromes change in TOS pretty much saying that they are tracking your info, storing it on their servers, and then selling it to companies, many people are no longer using Chrome, and more are learning about the TOS and switching to another browser.
Yes, I know all Internet browsers track your info, but with the other browsers, it is just to create personalized ads, Google has been outright selling your info to companies, and building a eerily accurate profile on individuals. I found a site a while back where you could type in any name, it would then give you their last 5 or 6 addresses, then there was pages of information about a lot of things such as hobbies, interests, age and DOB, what magazines you subscribe to, what credit cards and bank accounts you have (not the numbers, just the names). Oddly enough, it was quite accurate for the most part. It did say something about me liking motorcycles. Not quite sure where it got that from.