As an example, I work in Oslo, and we have offices in Trondheim and Tromso as well due to the universities in those cities. Recruiting people to work in Oslo is quite easy, but almost nobody is willing to move to Trondheim or Tromso unless they were looking to move back there anyway.

The center of gravity also should move. Example, if all CXOs move then there is a chance that office will prosper and people from other parts of country would also move there even if they had no plans earlier.

Quite often I have seen that satellite office don't prosper because the center of action is still at HQ, that translates to freedom of moving between teams, opportunity to work on problems that really matter for the company, etc. Satellite office attracts only those folks who have reasons to be in those cities (usually for personal reasons, very seldom for professional ones).

Only way it can be really effective is if a company moves lock, stock and barrel to a new location - the way Boeing did in early 2000 (moved its HQ from Seattle to Chicago).