That's like saying why wear PPE and follow safety protocols on a construction site, it'll save us money if we don't do any of that. Nobody died or got hurt? Perfect.

There's a reason things need to be done a certain way, if something had gone wrong what would've been the consequences? What if all those data racks full of personal user information were just straight up stolen by the random movers they hired off the street?? What if the floor had collapsed under the weight of the servers being moved, tipped the server over and crushed someone? Just because things worked out relatively fine doesn't mean no harm no foul.

Musk is an idiot. Deciding to do things his way to save money and time reflects poorly on all his other companies.