Atlassian is an Australian company, that's why.
The companies pushing to get people back into the office are coincidentally the ones being run by individuals who also have a vested interest in avoiding the corporate property market bubble bursting, as it has become increasingly clear that the absolute monstrous amount of parking lots, giant offices, and fast food chains in inner cities are no longer very much needed in the modern world, when a massive amount of the work force can get their job done just as well, if not better, from the comfort of their homes.
Unfortunately they have a vested interested in keeping that market, which is already on life support, breathing as long as possible or their net worth crashes.
Result: try and force your employees back in the office in a vain attempt to perform CPR on said market an--- oh shit what, you just quit and got a job for a company halfway around the world? You can just do that? Are you telling me there's countries out there not propping up overly engorged property markets and teetering their economy on top of a dead in the water industry...?
Shit, guess they didn't think that through very well...