You hit the nail on its head, great explanation!

I'm always so fustrated when someone doesn't get the MoneySupply-Inflation that still occurs in bitcoin just at an exponentially decreasing percentage. So right know for bitcoin to keep its value it has to go up by the price percentage of the increase in supply.

So currently every 10 minutes 25 bitcoin get created which means 86400 seccond/increase in supply per second (0.042)= 2057 bitcoin per day
Now we calculate the marketvalue of those 2057 btc (2057*15000= 30 855 000 USD)

Therefore the marketcap of Bitcoin has to increase by 30 855 000 USD per day to hold its value i.e. current exchange rate.

This is equal to (30 855 000/240 000 000 000) = 0.0001285 percent of the marketcap