Because currently they can well track everything you do on your computer,[0] but tracking all your activities on the web is still a bit tricky if you don't use non-MS browser.
[0] Of course they say it's all anonymyzed (at least if you are in Europe...) and no specific info is added to your profile, they are just interested in general trends etc., not individuals - but the fact remains you have little choice here.
Unfortunately the truth. The money isn't in creating the best browser they can, it's in what they can siphon from their users. And how they can pry upon impulsive and impoverished shoppers: https://arstechnica.com/information-technology/2021/11/micro...
Meanwhile Apple has no problem also prying about impulsive and impoverished shoppers by offering both a credit card they forced Goldman to issue based on lower standards (which they have lost another $1 billion on this year) AND now offering BNPL too.
It's almost like big corporations love to "exploit markets" wrapped in layers of feel good marketing.
[0] Of course they say it's all anonymyzed (at least if you are in Europe...) and no specific info is added to your profile, they are just interested in general trends etc., not individuals - but the fact remains you have little choice here.