I suspect that when you do this the following thing happens:

* Big businesses are unaffected as they use click fraud prevention services.

* Businesses that don’t use that have to pay more money to Google because people clicked on their ad, and they think their marketing is effective (at least from a click through perspective).

* Google makes even more money because you are clicking on all the ads and it makes them look better. They can demonstrate how well their marketing platform works even better!