hayan desbancado
-they/you have ousted
Antepresente de subjuntivo para el sujetoellos/ellas/ustedesdel verbodesbancar.

desbancar

Sin embargo, parece que los buros hayan desbancado las reglas mismas de su funcionamiento.
However, it seems that the offices bypassed the very rules by which they were supposed to operate.
Palabra del día
el hada madrina