I dont see a problem with the story at all with this. You might think that 1 in a million chance isnt much and many people would get the pet. But you also need to consider this is more like a boss fight, where a min-maxed player would take 15 minutes to attempt 1 tame. Then, considering the player sleeps 8 hours a day and waste no time eating, going to the bathroom, or anything else, just attempting to tame the pet, then in the worst case where only until attempt 1 million it succeeds, that would mean that person has spent 15,625 days trying to tame a wolf that he didnt even know it was possible in the first place. And that 15 mins is the least time taken, after learning all the attack patterns and skills, and devising the best strategy. This means at the very least, an unlucky player with the knowledge of how to do it (which didnt exist there since secrets were very coveted) would take a little less than 43 years to accomplish this. BTW, this is further explained in a couple chapters, I just wanted to point it out. And I dont consider it spoilers since I only said the fastest time it took back in Mobius.