You're missing the bit where the sites in question are basically zero value link farms, who got downranked for low quality content.
Don't get me started about the maps thing. They're very keen on defining Google search as Web search, and neatly divided search engines. Don't know about you, but if I put an address into Google search I expect a map back, and it's daft to expect Google to guess how to find it on a competitors sites when they have (likely better) data at their disposal. And yes, they got ruled against for this.(giving a helpful Google map result if I input an address)
Don't get me started about the maps thing. They're very keen on defining Google search as Web search, and neatly divided search engines. Don't know about you, but if I put an address into Google search I expect a map back, and it's daft to expect Google to guess how to find it on a competitors sites when they have (likely better) data at their disposal. And yes, they got ruled against for this.(giving a helpful Google map result if I input an address)