This! I gave a talk about how difficult it will be for RISC-V to enter the server space: https://rwmj.wordpress.com/2018/05/21/my-talk-from-the-risc-...

For full disclosure, I work for Red Hat and am keeping an eye on RISC-V for servers, and I hope it does succeed but there's a mountain to climb and lots of ways to screw up.