Agreed, though I guess it's that I'm not too interested in the general use-case of generic independent executables that can run on any system by themselves, which APE is aimed at. It's probably good for me to be explicit that I'm interested in a more specific use-case that I think is shared by some people interested in very portable executables: where you have some application that contains redistributable plugins, and those plugins must be executable by the application on any OS/architecture that the application runs on and be sandboxable. WASM is very well-shaped for this specific use-case; it might be okay for the general independent-executable use-case if you embed a few small WASM interpreters or if your target platforms each include one (which seems increasingly reasonable on modern systems that have one because it's needed for the system webviews).