With the figure am seeing right now I won't say otherwise but to stand on the existing protocol, if this is the exact figure of the  world population who owns bitcoin, then bitcoin adoption is still slow and still early. Although others may see this figure as a good one from the mathematics that has been done so far, but for it not, let's take a look at how far bitcoin have gone, people talk about bitcoin both offline and online yet less than 4 percent of the world population owns bitcoin, not good at all I expect to see more than that  at least 10 percent will be preferable.