Can anyone give a perspective why is it the case? In Europe it seems impossible not to have commercial software positions in a big local hub city - and in US whole areas seem to be devoid of them as HN crowd implies.
It's because Washington, DC is the nation's capital and where our legislative bodies, heads of state, and our various departments (ministries) are based out of. There are also many military bases in close proximity and the military headquarters (Pentagon) is across the river in Virginia.
I think people are misinterpreting my comment... there _are_ non-defense/government jobs in the area but they are dwarfed by the number of such jobs because of the pervasive nature of the aforementioned entities. When I lived in the area more than 90% of LinkedIn recruiter messages that I got were about these jobs. This ceased being the case after I moved even when I was still in the defense contracting industry.
See my sibling comment. I think the OP overstated the lack of non-government jobs in the area. I've lived here (Dulles tech corridor) most of my life and work in non-government software.
I think people are misinterpreting my comment... there _are_ non-defense/government jobs in the area but they are dwarfed by the number of such jobs because of the pervasive nature of the aforementioned entities. When I lived in the area more than 90% of LinkedIn recruiter messages that I got were about these jobs. This ceased being the case after I moved even when I was still in the defense contracting industry.