If work (of any kind) can only be done face-to-face, why do companies have satellite offices? I've never worked for a company with more than a few hundred empl

If work (of any kind) can only be done face-to-face, why do companies have satellite offices? I've never worked for a company with more than a few hundred employees that didn't have offices in multiple states and co-workers who had never met in person, yet still conducted business just fine remotely.