Asserting "private email" is a modern litmus test for someone's technical understanding and capabilities, or lack thereof. Snake oil companies will always hide behind "it's encrypted" and "it's hosted in Switzerland" tropes that mean nothing to anyone who has done a modicum of research. Real privacy is not the result of some product, especially not when its so desperately and obviously shilled.
Are you suggesting that because the only way to have truly private email (in the U.S. at least), is to own the server hardware, the property it's colocated on, and the Internet connection. Because this is true, but not helpful.