Every once in a while I'll do a search on Google from a browser with no blocker for something like 'ebay' or some other big brand name and I'm always surprised to see that big brand name has bought ads for themselves, it never made sense since they're always the first search result anyways. Now I can only assume two things... 1. Some number of those ads were scams 2. Some large number of people just blindly click on…
Google will not change any rules to forbid bidding on brand names because they are making a ton of money of it. Think of something like amazon paying more than $1 for every click just to not loose any potential customer. Adwords is a money burning system.