Negligent. It's not a priority to them. They're too busy burning their cycles trying to make it smarter faster than anyone else can make theirs smarter, so that they win infinite dollars. Safety? That's for people content with second place.

That's my take, based on their actions. (Which do speak louder than words.)

The alternative is that they're competent to create an AI, but not to create a sandbox, nor even to use an AI to create a sandbox. That seems... unlikely.