https://fred.stlouisfed.org/series/LABSHPUSA156NRUG

https://fred.stlouisfed.org/series/PRS85006173

https://fred.stlouisfed.org/series/W270RE1A156NBEA

The labour share of GDP has been roughly within a narrow 50% to 65%-ish bound throughout. It's moving up and down a bit, yes, but still within that bound.

Btw, if you are looking for a villain, look at the land share of GDP. The capital share has been fairly steady.