I fear you may have a very skewed sense of a software engineer's place in the world.
The world's largest companies today were founded by software engineers. There's no inherent need for a designated "business" person within a tech company.
And we didn't even talk about FOSS and indie development which are both as big as big tech and driven exclusively by programmers.
I’m sure there are a handful of Zuckerberg type people (let’s be extravagant and say there at 10k such developer/entrepreneurs who have built unicorns by dint of their software skills) but the software engineering discipline is orders of magnitude bigger than 10k.
Edit - Since the original comment was focused on dollar value created by software engineers, we can discount much of FOSS where value has been captured by the likes of AWS and RedHat, not the FOSS community.