[JesseMeyer]

Inflationary theory. Someone more educated on the topic can pine in, but my lay understanding is that the output of some form of primeval radioactive decay (Big Bang) caused a phenomenal rate of spacial expansion, which caused space to expand faster than the rate of gravitational collapse in those first moments.

[sliken]

It's not the rate of gravitational collapse you have to beat, it's the speed of light.

Although I guess that makes sense. After all it's spacetime, not space. So if the expansion rate is higher than the speed of light, then you don't have the black hole problem.