Do you really believe that Facebook/WhatsApp don't have the data ? Please we are in 2016, data is everything! Don't you think they sell or use our data for an i

Do you really believe that Facebook/WhatsApp don't have the data ? Please we are in 2016, data is everything! Don't you think they sell or use our data for an infinite kind of applications like send ads ? Analysing our personal data like WhatsApp and Facebook they can have so minimum details about us and classify in really minimum groups of "publicity". The mankind never in history had so mach data and ways(powerful computers) to compute it like today. it is not a stupid conspiracy theory, Google does read our email to sell ads and it is in the ToS. The question is, just because it isn't in the ToS it doesn't exist ? And nobody can investigate it ?