The very fact that analytics can be ethical was the very thing that attracted me towards Matomo. Users coming to your site and trusting you to keep the transaction between yourselves shouldn't be worried about a third party collecting more data on you. The fact that Matomo respects peoples' privacy and wilfully doesn't track someone if they don't want to be tracked, that..., that it what makes them the best.
Any data that is collected about a person's behaviour on our website never leaves our server, is not sold to a 3rd party and becomes no one else's business. This is why I personally love Matomo - to be able to host it on your own server, keep all that data from BIG BROTHER and make sure the customer is treated as a customer and not a product! Review collected by and hosted on G2.com.