You'd never run MS SQL Server and these other servers on the same machine either way, so you could easily run SQL Server on Linux and Reporting Services on Wind

You'd never run MS SQL Server and these other servers on the same machine either way, so you could easily run SQL Server on Linux and Reporting Services on Windows Server. Although if you're virtualizing Windows Server, it may be effectively free to run an additional Windows Server instance (since you pay per core regardless); but if your hypervisor's resources are already saturated then you could take SQL Server off of it and put it onto a inexpensive Linux Server.