There is an incentive to not abuse their own server time serving robots, essentially creating the status quo. Meanwhile, advertisers value users' data like gol

There is an incentive to not abuse their own server time serving robots, essentially creating the status quo. Meanwhile, advertisers value users' data like gold. Unlike server time, most advertisers are okay to collect their own data for advertising purposes, and this causes them to have an unwritten agreement to collect data. Unless there is a stronger stick to force them otherwise, it is in their best interests to collect data and you need to have active intervention to prevent it.