It seems that yet another new issue is her to mar the quality control regarding Google’s newest Pixel 2 and Pixel 2 XL stock Android champs.
It would seem that a number of Google Pixel 2 units purchased straight from the Play Store and not some shady reseller are arriving with bootloaders that can’t be unlocked. As you might imagine, the issue first popped up on XDA’s developer-centric forums, where multiple users bemoaned that they are unable to unlock the bootlaoders of their new devices though they are supposed to be able to do that by default, … – Source