At the same time, all these black holes should be responsible for the HUBBLE REDSHIFT, which increases at longer distance by that cumulative black hole absorbation effect of Photons including the oscillating dark energy based Quantum Vacuum itself.
The consumption of the vacuum by the growing black hole influence should count as the origin of the Big Crunch.
The decreasing pressure of the vacuum onto the Big Crunch Black Hole however should lead to the Big Bang again. (see poster below)
See also youtube for the relation between Hubble redshift and Dark Night Sky:
https://www.youtube.com/watch?v=gxJ4M7tyLRE
see: Dipole Repeller Gravity Effects at Different Universal Scales as the Origin of Large Scale and Local Quantum Gravity and Hubble Redshift.
http://vixra.org/pdf/1708.0083v1.pdf
My proposal: The constant growing number of Dark Matte Black Holes in and mostly around galaxies is the origin of the contraction of the universe, and the Black Nightsky.
Older Hubble redshift essays:
http://vixra.org/pdf/1702.0040v3.pdf
http://vixra.org/pdf/1303.0211v1.pdf
see also: Olbers paradox.
https://futurism.com/why-is-the-night-sky-black