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Like I said earlier, my professional opinion is that after certain point, the value of Bitcoin will start to increase exponentially and that means we will see massive FOMO buying that will catalyst rapid price change due to people not being able to move enough Bitcoin to exchanges. Essentially people will eat through all existing sell orders instead of hitting any freshly created "walls".

That will rapidly result in exchanges running out of FIAT and that will cause critical failure.
I've already seen in some exchanges that BTC-EUR rate has gone out of representable number range and most exchanges should support minimum of 16 significant digits.