Tech companies are richer than some entire nations.

Data is literally the new gold and you can bet your profile is being sold and bought for all kinds of statistical analysis.

To what areas to send flyers, what voting region to draw. From how likely you are to become a potential terrorist. If you have a pattern of consuming that can be reinforced showing an ad at the right time. Or if you have such low income and high debt they don't need to bother except if they are a predatory money lending service, then they may give you a personal call.

If there exists data on it then businesses are made specifically to exploit that data.

But of course you’ll never see or hear what happens to your specific data. Your not supposed to know your being mined for profit and sold to the highest bidding manipulator.