[ARobotics]

Random hypothesis: Risk.

In 1999 dot coms were making everyone rich and would continue to do so forever. Everyone was getting funded, going public, growing. It didn't appear working at a tech startup was a risky endeavor likely to leave you unemployed in a month.

Today, startups are viewed as very risky. They might go bankrupt, your stock options might be worthless, you might end up with several years of your life gone with little to show for it.

What group of people is going to have the risk profile best suited for that environment - young, single men sounds like a reasonable answer.