the nullity should not be mistaken for nothing.
the existence of a massive centralising force (scientists call it mass) and a vast expansive force is just another expression of the same universe we inhabit.
in neither case is there an equilibrium state.
the difference is that the nullity involves no matter, which is kinda difficult for you earthlngs to comprehend! :-)
in its pure form, mass is separable from matter. but clearly, matterless mass is an unstable form alongside boundless energy.
so that's the original condition. and that condition produced our universe. f=ma.
we experience these opposing forces in what we call space-time which holds the fractured, apparently coherent forms that force in opposition created and which we call matter.
space appears empty to us but it is not free of force.
matter is a composite of mass, light and energy. atoms are constructed out of particles bound to one another by force relationships.
astronomical forms are aggregations of granular matter. planets revolve around suns. solar systems rotate around galaxies that perhaps have black holes at their heart.
mass and force organise everything. mass and force explain everything. everything is mass and force in some form or another.