There are truly customers that bigger machine no longer cuts.
Disclaimer: I'm an Engineer at PS.
I did not say there is no market, but I am willing to bet whatever that the majority of your client base would be much cheaper off with a simple setup where they can scale the entirety of their company’s existence with one machine. Not even a large one. This cloud stuff has its place but not for most. For them it’s either themselves overspending or wasting VC money.
We have tons of customers who do exactly this. It's great. Sharding is for customers who out grow this path.
Why would multiple machines be cheaper than one? Don’t you pay an overhead per machine?