I share your oppinion and hope that we will get it one day. It wouldn't be the first game where it got added past-release (Millenia, Master of Magic remake) or during development (Pax Augusta) by request...however, given how many UI issues Civ7 has, how often edge scrolling is mentioned prominently and how silent the devs where about to consider it (I'm not even sure that they have it on their radar at all)...I doubt we will see this in the next patch. The problem is just that this feature is considered to be not longer needed or even liked in some modern hardware environments (like multiple monitors)...and development seem to cater to this standard. Old style players (or more precisely: those using a classic technic setup to play) are just no longer a priority and that's why at best "we" get this with a delay and after requesting it.