The part that I find odd is that a person could live in a suburb of Atlanta, but be working on a team on LA, and instead of going to the Atlanta office, be forced to move to LA, despite living within a semi-reasonable distance of *an* IBM office. Too much to hope for that the unlucky person would be permitted to switch to the team based at the office already nearby, rather than moving to where the cost of living is three times higher? This isn't about being "competitive" or "x factor" or any of the other buzzword-bingo terms used here, this is so a managerial person that reports up the chain to our videogenic friend here can go and count noses and shoulder surf to make sure people are working, to keep the minions firmly under thumb. If you're looking to get someone to spend seven figures on an AS/400 upgrade, you don't work that deal over the phone from the other side of the country. And airplanes, hotels, rental cars...they add up fast, especially if the saleperson has to make several trips. Add in more of the same for "presales engineering" on at least some of those trips, you can quickly find expenses exceed the "savings" of putting everyone in to one location.
Fact is, it boils down to trust..or lack thereof, in one's employees. So you gather them together where you can watch them...c'mon, these the salespeople, they're on commission. If they goof off, they don't get paid...at least, not very much. Besides...if "A" has zero sales for very long, its not hard to think "Gee, maybe we should be talking to A, find out what's going on." Maybe there's leads A is chasing but the customer has to work the budget, and pry more money out of the accountants, maybe A is watching Youtube all day. Either way, A isn't getting much income. That's a self-correcting situation...A will eventually need money and get busy selling stuff, will drum up new leads for the stagnant ones, or move on to some other job where doing nothing pays well and is appreciated...like being a member of Congress. They're paid well and, generally, the less they do the better since everything they do ends up costing billions of dollars for no return or make life less happy for the average taxpayer.