bitcoin is not about competing with other currencies so it is not going to become number 1, 2, etc. bitcoin is just a new form of currency here to offer different options. the options that people wanted for years and because of that it will continue to grow but it is not about competing or replacing anything.
It's about competing sometimes .... To make it known . Compare which one better , which one provide you benefit and people can take a look what to use later .
Bitcoin at the world's 6th largest currency which means people has seriously considered Bitcoin as something great and successfully get people attention with short time only , it's around ten year since invented and here we are based on the data explained above.