This is why wages are pushed down, if all those married nerds with 4 kids were making twice or three times the money, it would be game changing in American society. It’s not solely why wages are pushed down, but don’t think it’s not part of the game. IT remains family supporting and male and continues to have a disproportionate share of conservative (personality-wise) men in it. This is true even with IT guys totally bought-in to the whole “social justice” racket. The conservative personality tendency still trickles out. There’s also a ton of modelling traditional gender roles in their personal lives, even if they are married to a fellow techie/nerd.
Incidentally, this is why guilds would actually not be a bad idea in the long term, but that can be left to someone else.