Because it hardly makes a difference to power users, let alone average people. The Pixel phones come loaded with Google spyware, but you can flash your own rom

Because it hardly makes a difference to power users, let alone average people. The Pixel phones come loaded with Google spyware, but you can flash your own rom on it to do whatever you want. But unless someone is out there developing an alternative rom without spyware that does everything you need, it may as well be locked down.