As your comments, Korea's smart city has technological and normative advances compared to other countries. However, we think that the USA and China are more developed in service than Korea`s (Smart city trends: A focus on 5 countries and 15 companies, Cities, 2022). Therefore, this paper intends to cover only general smart city technologies worldwide (Smart city trends: A focus on 5 countries and 15 companies, Cities 2022). We fully agree with the reviewer's comments that they may feel uncomfortable in other countries. After that, we will do more research and expand the case to other countries. Thank you very much for your comments.
If it goes beyond COVID, this is a claim that needs to be backed with a sound and transparent evaluation by the authors or literature.