"Black Holes" are supposed to have such immense gravity that not even light can escape? Soooo, eventually the Black Holes consume all around them because the ever greater gravity sucks more and more in to them.

Sooner or (most probably much) later one Black Hole consumes another (or they just amalgamate) and the bigger Black Hole can suck in matter from even further away and so it goes on for eons.

Eventually the Black Hole has such a massive amount of matter and the gravity is so great, the matter within is compressed in to a minute "space".

Now...... when another such thing comes along.........****BINGO****

Who is not to say this has all happened before............... many times?

Also.... note that I said the Universe as we know it. We don't know what else lies "beyond" our own do we? Is there an end, an "edge"? It's not that long ago people thought that if they reached the horizon they'd drop off.....