And yet whenever I buy anything online I'm inundated with ads for said item. In fact I almost wish there were an officially sanctioned/ standardised way of updating your status as a tracked user on various products you might be interested in or have in fact now purchased with no need to buy another soon. As it is I still see ads for baby formula on YouTube despite having had no need to purchase it for over 16 years (and I honestly would expect Google should know that about me, though when I ask Google Assist how old my children are it refuses to tell me...)
Google don't need to follow local law and regulations.
Google don't need to employ people to verify content or take legal responsibility.
Google can track users and thus categorize users in much more fine details than television and news papers ever could. A magazine about horseback riding might have a vague idea about who their readers are, but google can find out that a pregnant teenage girl has yet to tell her parents.
To some degree that is how ads worked in print: In a magazine about horseback riding you will find ads about riding equipment, as readers are into that while reading.