[herdcall]

Multi language support is just one of the selling points, you didn't mention the other two: sandboxed security with explicit capabilities and high performance. E.g., I have a Web Assembly module running on the server (Fermyon) that needs explicit capabilities defined to even make a network call to a Twilio endpoint or read a local file. That means you can run a random Web Assembly module that you with confidence, just like you can typically open a random website on the browser without concern. By contast, you can't say that when running a random Java class that you don't trust.