I hope you don't believe I wrote something about that IPFS is only suitable for local usage. You can have your own remote network, spanning whatever nodes/computers/servers you want, remote or otherwise :)
Funny enough. Interplanetary refers to the ability to know a file created on earth would still hash to the same value if an alien created it on Alpha Centauri. You could both work independently and combine your databases and the distance wouldn’t matter.