Someone has registered about 10 domains and set-up domain redirects to his main website. With these redirects he registered AdWords accounts with a separate one for each domain.
Now if you perform a search for "widgets" you will see his 7 domains in a row showing up on AdWords. Obviously he has very deep pockets and is trying to not let anybody else advertise under particular keywords. He is setting very high CPC limits and nobody dares to outbid him
Now, I could not care less about him or his tactics, for I fold #1 and 2 positions for most keywords in this field in regular search results. What bugs me is that he does not allow anybody else advertise and thus eliminating a healthy competition in the market.
Does Google have policy against such tactics similar to their regular serps?