It might make people be more authentic and real as positive commerce fake reviews is the issue at hand. If im using my U.S. public Internet reputation ID to leave a review then it one says Im in the U.S.(not a foreigner) as ive been granted such an ID in the U.S. and two people would be more prone to be nice. While the negative comments would be in the majority anonymous I'm betting. Though anonymous comments would not hold as much weight but still been seen.

As for an incentive in time especially if a small to mid-size portion of Internet citizens are sick of all the fakeness and start using their Internet public reputation ID then it becomes a societal push.

I think such is needed even more so for all the deepfakes that may proliferate the Internet in the next few years or more. If that becomes a huge problem of really Internet citizens figuring out what is what then maybe that starts the societal push with government offering it but not ever pushing it.