Azure tried with Stack Hub (private airgapped cloud), Stack Edge (various options, including ruggedized, gpu enabled, battery powered, rackable). The JEDI contract didnt amount to much so I dont know if this range has a future.
AWS have tried with outposts and the snow family. Seems to be doing ok in the commercial space.
Now google.
They all seem to have some weird genesis as data transfer gateways (looks like a local network share, but really sends data back to S3 or some other cloud store), and they all seem to have weird compromises that the disconnected nature forces upon them. For example you need to connect the box to the cloud at least once every 30 days to have it sync to the mother ship, or whatever.
I wish them well on this but I doubt it will be much more than a tickbox for government contracts and won't see much live deployment.
If google came out with a range of box designs that fit in a backpack or a VPX chassis, could be spared and replaced in the field by any vendor in the defense industrial space, could run disconnected for 120 days or more without degrading, could be operated by an 18 year old under duress in a combat environment (no one is following a manual at that point, it needs to be "turn the key and oress the big red button" simple) and could seamlessly upgrade/clean themselves up when reconnected to the cloud back at base, they'd certainly have my attention. Oh and given the geo situation, maybe made from components that have alternatives not made in Taiwan.