How do people calculate what could be the price depending on market cap?
For example, people saying that DGB will hit 1$ at 8billion market cap
These are hopes and more just speculations because with this huge supply it is not possible in current times for any coin to reach at $1. It may be achievable and normal thing after 3-5 years when coins with supplies in billions will be able to get reach at $1 price. Just like 100 million coins are doing right now which was impossible thing last year.