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Basically the customer has to "outbid" the ad industry.

Example: Facebook makes about $40/user off ads and related things (at least as of a few years ago), so users would need to pay $40/month or more to have a chance at keeping Facebook away from the ad market.

Of course then the temptation is to double-dip, which is Apple's temptation. The only solution to that is either regulation or customers penalizing companies that invade privacy by voting with their wallet.