I totally agree with what you said. Currently I'm loading compiled C code with the Python foreign function interface (often not (solely) for performance reasons, but because it just so happens that I already have a C library that solves a particular problem). It would be great if I wouldn't have to worry about providing a shared library for all possible target platforms.

In fact, when I searched for a Python WebAssembly interpreter a few weeks ago I stumbled across this project [1]. So rest assured, people are working on this already.

[1] https://github.com/kanaka/warpy