That may give you the fastest responding vault, but also the more expensive one to run. You are paying for the VPS and storage and bandwidth.
For the home vault that might respond a little slower you are paying almost zero cost to run it since the vault is running on your computer that is already running. The vault is using spare resource. OR you could run a very cheap SBC+Disk at home using a few watts of power
So the VPS might earn 20% more coin over time than the home vault, but the VPS costs might and likely be more than that 20% and you actually earn less than the home vault of similar size.
But running a home vault with cloud storage is going to not work because of the lag/delays doubling or trebling the time to respond and earn little or no coin or even be rejected by the network as a vault.