Let's assume that such a person passes a triage for O1 (there's no guarantee! Suppose there are two companies using some very specific technology, first company in the US poaches an employee from the Shanghai office of the second company for his narrow skill in this technology- would he necessarily be an individual with extraordinary ability? Unique ability, yes. Extraordinary "genius"? Hard to say).
There is a significant difference between H1B and O1, which is the burden for evidence. The burden for O1 is quite onerous compared to H1B. You have to present several reference letters, meet strict criteria for excellence, and even then it is not guaranteed. There is a fair amount of inconsistency in how O1 (or EB1) cases are adjudicated.