My mother taught me since young the difference between doctor's position towards prescribing drugs in England vs third world countries.
Doctors in England were used not to prescribe any drugs, while third world ones love writing those special little notes that make them so unique. And we are talking about drugs that had gone through all the testing phases and even more, than all other countries require.
My granduncle is a doctor who married an English nurse. He had explained my mother when she came back from England when young, that the reason for it is as follows: "no matter what great testing and simulations you can perform on drugs, you can only really know about secondary side effects until after 50-60 years of use".
Time IS a factor, because amongst other things, it allows cultural change, meaning "to truthfully test interactions within the network".
Cities are just the same. To implement change, it takes both time and continuity. Remember, daring to go beyond "what people say" or the pragmatism of "we are -insert country name here-, we are so unique", will yield more value in the long term.
Cultures are created with time, and can change... with... you guessed it... time!