Yes, that is their business model -- it's surprising more people don't understand this. I know from experience regarding Trustpilot and Glassdoor specifically.

Yes, that is their business model -- it's surprising more people don't understand this. I know from experience regarding Trustpilot and Glassdoor specifically. FWIW, in my personal experience TrustPilot seemed to be a touch more interested in accuracy on managing the reviews, but that was a few years back.