It's definitely possible to spin up a Windows instance on EC2 and get it running. Many startups built on .NET do that today.
As for the sysadmin on the software side, I agree most .NET devs that want to build something probably have those skills. It's the hardware aspect that I think needed to be addressed.
The OP espoused the easy scalability of .NET using the Stackoverflow example without mentioning that they colocated with dedicated hardware.