Not automatically. There's aleeady case law(0x1) that ruled that images captured by Flock ALPR cameras are public records, even though the data are stored by Flock (a private vendor), not directly by the city.
The court rejected the notion that “because the data sits on a private server, it’s not a public record.” Instead, it said that since the surveillance is paid for by the public (taxpayers) and used by a public agency, the data must comply with the state’s public-records law.
This shows that — in at least one jurisdiction — using a private company to run ALPRs doesn’t shield the data from public-records requests.
(0x1) https://www.eff.org/deeplinks/2025/11/washington-court-rules...