It shouldn’t be hard.
Back in the early days of email, we worried about spam. Merchants shaped up by agreeing not to sell our addresses. Spam filters also did their thing. Email got fixed.
Today, Facebook and Google will have to agree not to spy on us. And Firefox has rolled out a ‘spy’ filter. VPNs will become standard. Those who spied on us will try not to pay under class actions, but the tort bar will not relent.
This privacy thing cuts both ways.