1. It goes beyond antitrust guidelines by banning rent prediction using any “non-public competitor data”, which is stricter than the former antitrust guidelines which prohibited sharing “competitively sensitive variables” (https://www.ftc.gov/sites/default/files/attachments/dealings...). To the extent that it differs from banning competitively sensitive data, it is just banning the use of data to make rentals more efficient. If landlords are pricing accurately but not monopolistically, this should reduce turnover, reduce vacancy, and reduce the occasions where a listing gets a crowd of applicants, which is good for both landlord and tenant. It’s bad to try to ban accurate data.
2. It provides a private right of action for tenants and nonprofits to sue, just like Proposition 65 (Known by the State of California to cause cancer) incentivizes bounty hunters to sue. The point seems to be to punish landlords more than it is to establish fair rules.
And it seems that these lawsuits are just piggybacking on the DOJ settlement by punishing anyone who uses RealPage as soon as the ordinance becomes effective in 30 days while RealPage was already working to settle federally. The complaints (e.g. the SF one https://www.courtlistener.com/docket/73573242/gomez-v-greyst...) don’t have any new violations; just companies who are already settling. I don’t think that’s justice for a city to frontrun the federal settlement with new violations for the same program.