Ask HN: Sites that self-host their web analytics?

I am trying to gather arguments to convince some of our SaaS customers to start to self-host their web analytics in lieu of Google Analytics.

For example Matomo, Plausible.io, Fathom Analytics (there are probably others) all support self-hosting their solutions.

Besides the usual arguments of less legal expose, simplified GDPR consents and so on, I would like to also appeal to the limbic system in the marketers' heads, by showcasing some great examples of well-known and respectable companies that have gone down this route.

But I cannot find any such resource.

Are you self-hosting your web analytics? How is the mileage?

If you are not eager to reveal your affiliations, perhaps you have noticed some websites that did not sell you out immediately?