All of the ads provided were for websites where writers could be hired. Non of the organic results were.
Everyone here knows I am not a G defender however G's SERPs algo can only deliver what IT deems the nearest possible result from its spidering:-)
The vast majority of websites are NOT updated weekly/monthly, let's be honest, not even yearly, therefore anyone searching for something is very unlikely to find a reasonably relevant result in the regular SERPs whereas an advertiser can target their keywords etc...
For example, I run a very popular hotel/bar site, it is updated several times a week, G knows this and the SERPs are reflected by this and it does extremely well both as a website and the high occupancy rates at the hotel. This was driven by both myself and the owner after I explained a few years ago how the SERPs and "other activities" generated interest plus improved rankings.
Then again I have my own business websites which are, to all and intents and purposes, evergreen sites, and getting G to update ANYTHING apart from it initial spidering etc, is a ruddy nightmare. These sites have to be absolutely "spot on" from day 1 otherwise G simply couldn't give a fig about them no matter how good and authoritative they may be.
G's doing a 50/50 job insofar as my experience is concerned across several business areas, really well in some and absolutely abysmal in others.
My consclusion?
G's strength is in mass, popular, predictable stuff.
It's weakness has no understanding whatsoever in many specialist and technical areas unless it's OEM produced details.
Every day I see glaring widget trade errors/mistakes in the knowledge box, every day I report these, obviously NO ONE takes any notice.