Quote Originally Posted by Mismaah View Post
but if he conquers it means he got the city so why not the techs

So if you look at it as tangible an intangible it may make more sense ----

If you go to college and earn a degree and I come along and steal your car, would I also aquire your wealth of knowledge and abilities??? No!

Techs are time and player based, and cities are items to be aquired.