Ads suck, but the bigger danger is that the uber-profile will be available for subpoena, or the govt might just flip the fuckit bit and take it because they can

Ads suck, but the bigger danger is that the uber-profile will be available for subpoena, or the govt might just flip the fuckit bit and take it because they can. Being allowed to run a billion dollar business unmolested by the govt would be a strong incentive, especially for a company not known for privacy advocacy.