Does 0.00006% factor in how many companies are started with goals that have no billion dollar potential? While any company may have an outlying chance of accide

Does 0.00006% factor in how many companies are started with goals that have no billion dollar potential? While any company may have an outlying chance of accidentally coming up with a billion dollar idea, most have business plans that would never scale to a billion dollar valuation no matter how well executed or lucky they are. I'm curious whether this statistic is only based on the success of those companies that are _trying_ to get there.