It is culture in about every form. Education isn't actively made to teach people to be independent. Work culture for the past X decades has been pushing people to be dependent on each other directly. Social culture has pushed people to be dependent on work to fulfill various needs beyond a paycheck.

And despite us catering towards the open office for multiple decades, we are still seeing it is barely on par with an ad-hoc WFH call while other things are going awry. Anyone with any kind of perspective can tell these comparisons aren't remotely fair.