Personally I don’t have any experience with the Xavier, but if your particular need is computer vision or something that is available only for the Volta, then it is the right tool for you. It still won’t match the power of a discrete Volta but you will most certainly be able to do your proof of concept.
On a sidenote, make sure your potential investors know, or the person communicating with them, that this technology is scalable. But you also need to properly implement the load distribution according to the number of devices plugged. This is where the little Nano comes in handy to test scalability because it is cheap to stack them, but if your project needs at least the Xavier and you are paying upfront, boy it can hurt when you buy 3 of them. :)
As they say, “cloud is really just other people’s computers”, but since I never deal with hardware at this level, maybe @njuffa wants to enlighten us?