I understand that the data and the graphic ignite some sense of urgency in us. But bitcoin is a currency. Some will be bought and some will be sold so the data provided will not always be fixed. It will change over time.
It's good way to make people FOMO but to become a successful Bitcoin investor, you don't have to be FOMO. It's not enough to succeed too, and you have to understand about Bitcoin, this market and a fact that it will stay here, and you will have a lot of time for your investment and Bitcoin accumulation. If you can not buy it today, you can do it tomorrow or next years.
Not all 8 billion people are capable even and I am not talking about financial means. I am talking about newborns and the elderly. There are also those who may have disabilities and may never even know about bitcoin therefore will have no interest in owning one. There are those who simply do not believe in bitcoin as well.
They will be able to do this in future, people were born, get mature and die, it's very natural and the market is naturally operated too. Bitcoin is exchanged between buyers and sellers in the market and you can join it a buyer anytime. There are people with a lot of money but don't join this market because they don't have belief in Bitcoin, but if you can have belief in Bitcoin, you will be able to prepare your finance, investment capital and buy bitcoin with time through DCA.
Remember that belief must come together with knowledge that can be achieved with your research on Bitcoin first. Belief without knowledge would be very weak and can disappear any time.