OTOH Python itself is the world’s most popular programming language, yet has only recently had the money to support more than a single full-time developer.
This doesn't compete with Python.
Like if someone wrote a competitor to VHDL that looked like TEMU Python... Python would not be its competitor, VHDL would.
https://developer.nvidia.com/blog/cutile-jl-brings-nvidia-cu...
License-wise, Mojo reminds me of paid Borland compilers that were in vogue before I was born. Even if it's open-sourced, what incentive does Qualcomm have to maintain a happy path for Metal deployment? Mojo might actually be the best way to program Apple GPUs (on a technical level) and it would still lose due to politics.
Look at the Asahi Linux effort, for instance...