I personally think Google is trying to do right by its users. A website that is only about ADS and less about the brand, product and lacks other informative content will be penalized and rightly so. In order to improve and enhance web experience such discipline need be followed. Having said this yes there is a thin line between what is right and also what can adversely affect a legitimate website, for that perhaps assistance from an
SEO expert who can draw up a strategy that works truly helps.