Legal: “it’s forbidden to target ads at specific users”
Done.
Done.
Hopefully, the vacuum of people needing to know things would result in better independent Product reviews.
And the vacuum of not spending 30% of your company budget on advertising would hopefully lead to sinking prices and people being more willing to spend on things that were previously funded by advertising.
That already misses a huge problem though, I don't pay Mozilla for Firefox and I don't pay most online sites and services that gobble up my data and sell it off.
I may have misunderstood you, but my read on the third paragraph was mainly that Firefox, in this case, could still have a free browser that collects and sells data. That rule would just add one more fsctor for them to consider if they ever want a paid browser, they both need a viable market and be willing to give up the option to sell data.
But I highly doubt it removes the want for private data, though. Tracking is also there to measure performance, do AB tests, etc etc.
I'm sure such a broad sweeping law would solve some. But it won't make the ad industry suddenly "good" or go away, or get purged or such.