Strange matter hypothesis?

fhqwgads2005

I've read a little bit about the strange matter hypothesis, that normal nuclear matter is actually a metastable state and that if compressed to a critical density will reach the true ground state of strange matter (u,d,s quark liquid). I was wondering if there's actually a decent explanation or any idea of how all observable matter ended up in this metastable state? Wouldn't the high energy densities right after the big bang have forced all the matter into the strange state?