Buyers in the current rounds that 'top up' the price are most probably investors with large pockets. It is easy to keep the price relatively high compare to round 0 by slowly working up the price and use that extra push in the final minutes of each round. Seems to make sense if you are a round 0 whale.

If EOS is already ready, it would be better if the EOS team keeps quiet during the ICO period then. It would be quite a bombshell if EOS is 'released' or shown in public before the ICO is over.