In the future, it will be possible to host standalone WASM executables in the "cloud" like it is currently possible to host Docker containers. You won't have to rent a Linux server and run your own WASM runtime on Linux; the host will do that for you.
Microsoft Azure has a preview of this, but I haven't tried it: https://learn.microsoft.com/en-us/azure/aks/use-wasi-node-pools