Not to downplay dmr's importance here because he quite literally is the father of modern computing, but without him we'd just have something else and perhaps it would've been a bit later. A different systems programming language and a different operating system everything else is modeled after. High-level programming languages weren't a new concept when he wrote C. Before B they already had Fortran. Funny to call any of those High-level in 2026, but that's the whole importance of C, isn't it? It made writing complex systems easy compared to assembly languages or even fortran.
I'm not gonna bother doing a writeup about Jobs, we all here know he made precisely Jack shit.