In the mid september the bitcoin share of the total cryptocurrency market capitalization has been in freefall.
bitcoin's contribution to the total cryptcurrency market capitalization has dropped to just above 50.3%,down from almost 60% in the month (https://coinmarketcap.com/charts/)as other major cryptocurecies like litecoin,bitcoin cash,dash,ethereum,ripple and among others experience revival as a result of big wins.
Presently, bitcoin has a market cap of $117billion, down from $127billion from the beginning of the month.However, other cryptocurrencies made a great and significant gain at the cryptocurrency market as a result of traders and investors sentiment.
Not minding the fact that the price of bitcoin went up by almost 5% in the 24 hours to $6,700,it was not enough to remedy bitcoin losses for the month of september which contributed immensly why people thinks that the dominance of bitcoin is crashing.
However,the fall in the cryptocurrency market cap of bitcoin might be short lived.