> Python, Julia, and Jupyter notebooks will simply wipe out all usage of Mathematica outside of a few esoteric fields.
I'd wager that most of Mathematica's usage today, and in the past has been for those esoteric fields.
MATLAB always had higher market share for numerical work.
Mathematica's strength is in pure math. And nothing out there comes even close - not even SageMath. I wouldn't be surprised if all the pure math open source developers who are also math experts out there are fewer in number than those who contribute to Mathematica. You need detailed expertise in a math discipline. William Stein - founder of SageMath, wrote once on how impossibly difficult it is to get grants to support SageMath - most of them go to Mathematica or MATLAB. So if a math faculty member wants the extra income from grants, he/she is going to write a proposal targeting Mathematica, not SageMath.
Of course, once Stephen Wolfram dies, I don't know if Mathematica will continue to survive. But as long as he's alive, no open source pure math SW will overtake it.
He runs every aspect of the company. You can see his "live CEO'ing" videos which are very interesting. It's hard for companies like that to survive after the founder dies.
I'd wager that most of Mathematica's usage today, and in the past has been for those esoteric fields.
MATLAB always had higher market share for numerical work.
Mathematica's strength is in pure math. And nothing out there comes even close - not even SageMath. I wouldn't be surprised if all the pure math open source developers who are also math experts out there are fewer in number than those who contribute to Mathematica. You need detailed expertise in a math discipline. William Stein - founder of SageMath, wrote once on how impossibly difficult it is to get grants to support SageMath - most of them go to Mathematica or MATLAB. So if a math faculty member wants the extra income from grants, he/she is going to write a proposal targeting Mathematica, not SageMath.
Of course, once Stephen Wolfram dies, I don't know if Mathematica will continue to survive. But as long as he's alive, no open source pure math SW will overtake it.