Lisp started from mathematical roots and grew towards practical applications. OP asserts that data processing grew from practical applications and claims that

Lisp started from mathematical roots and grew towards practical applications. OP asserts that data processing grew from practical applications and claims that it then went for mathematical theory to try to make itself feel and appear more respectable. These are two quite different trajectories. Additionally, different disciplines often have quite different cultures and politics, which influences how their technologies get adopted.