Is it that simple though? 99% of businesses do not share full context of the use of personal data in a way where user could understand all the unintended conseq

Is it that simple though? 99% of businesses do not share full context of the use of personal data in a way where user could understand all the unintended consequences of their choice. Does Google explicitly tell users when they opt-in to some feature that it may result in sensitive data eventually exposed?