Someone in the know should enlighten us whether these measures have any benefit after years and years of practice? Meaning the mentioned companies already got w

Someone in the know should enlighten us whether these measures have any benefit after years and years of practice? Meaning the mentioned companies already got what they were after. I mean humans rarely change, they got the behavioural patterns needed and now they don't want anyone else to get this data and these restrictions are actually helping big tech or this data quickly deteriorates and fresh data on humans is needed all the time, so it's useful after all for Europeans.