[prawn]

Distracts from core business, lock in with employees could be an issue, risk if housing market drops away, etc.

Same reason many big businesses contract out cleaning and similar services rather than have dedicated staff performing those functions.

[azakai]

Sure, but then why does it make sense for IA to do this?

My question is, why is IA doing this and no one else - what makes them different? Or are other companies doing it and I haven't heard about it?