There is the obscure phenomenon of survivor bias but that is completely put in the shade by the principle of survival of the fittest so unless you can come up with an actual example of something either surviving or dying out for no reason.........
Surviver bias isn't an obscure phenomenon - it is extremely well known. In the form you are alluding it is framed around the notion that someone, or something, that survives must be somehow special, better, more valid, more worthy etc when in fact it might just be lucky.
Christianity happened to come along at the right time and in the right place. And that time wasn't the 1stC and that place wasn't Palestine. Rather in was around 313AD and Rome. Christianity hit lucky in being the right religion at the right time to attract a modernising Constantine.
Another religion that found their stars aligning in the same way would also have become dominant. Similarly, had Christianity not hit lucky, it would likely have gained no more prominence than a minor sect or cult (or rather a series of minor sects or cults).