Google’s enemy is not Facebook or Microsoft or Apple. Enemy number one for Google is the black hat spammers. The guys are like the guys from ‘Fight Club’ and wear no gloves when they fight. The search giant probably spends more money battling the spammers than any other thing.
But Google also targets sites that like to wear grey hats. Candidly, sometimes these new rules and changes seem to target and penalize innocent business owners who are simply trying to keep up.