Possible actual reason: Google understands US law very well and decided this was a reasonable sweet spot to maximize publicity and use, minimize legal risk. Wit

Possible actual reason: Google understands US law very well and decided this was a reasonable sweet spot to maximize publicity and use, minimize legal risk. With new tech, it’s hard to know what regional regs could be violated. Countries with stronger data regulation regimes are higher risk to launch anything in. It’s one of the costs to better privacy controls. You’re not going to get the latest hotness because teams have to think through the risks.