Perhaps there is still a market for the security concious or workloads sensitive to noisy neighbours.
Somewhat of a tangent - although not small scale, I have found the packet.net 96 core ARM offering to be good value.
It might not be enough to offset the other costs, but it could be enough to offer a less costly service. At the end of the day though, half of what you get with AWS is a ton of library support in many languages for using AWS services.
Performance and power are a complicated topic and Thunder-X2 might produce better numbers. 64-bit ARM for servers must be competitive with Xeons and POWER and can't compromise performance for power either.
This seems like a myth repeated without any proof to back it up.
Thank you for the packet.net mention. It is interesting, even if it is not quite what I am looking in this context.