OCSP is done over plain HTTP (for obvious reasons), so the OCSP provider doesn’t have exclusive access to this data. There is not much value there for DigiCert and others when every ISP can potentially sell the same data.
OCSP stapling helps maintain privacy, so eg. ESNI isn’t completely pointless when stapling is used.
OCSP stapling helps maintain privacy, so eg. ESNI isn’t completely pointless when stapling is used.