As much as I admire the power behind the “wolfram language”, it’s just never going to be open sourced, never going to really be available for a hobbyist to learn, never viable for a startup to build their entire data analysis core value on top of, its just never going to happen… Stephen Wolfram would die before he gave up control, the entire thing is his precious child. His track record at Wolfram Research is well established.
Mathematica could be so much more, but basically until Stephen dies, it will remain an academic mathematical tool. It’s a complete coin flip as to when he dies the company will collapse or thrive, but it’s just so far away from anything they have plans for at the moment that it’s just impossible to guess.