Core is a long way from replacing Framework
There's still no sign of server-side WCF in Core, for example, and indeed some opinion that there never will be any. That makes Core a non-starter for the .NET product I work on (which, admittedly, is not the typical .NET product). We could certainly rearchitect away from WCF, but there's no compelling advantage to using Core for us.
Biting the hand that feeds IT
