Bitcoin has been steadily losing market cap dominance, from 90%+ just two years ago to ~80% today.
When it comes to exchange dominance it's just 66.4%.
This trend will probably continue and in a few years there will be people using cryptocurrencies that do not know what bitcoin is.
Some things happen. And I do believe that if we let the other percentage of these people know about bitcoin we can raise it up once again.
To know better is one way of promoting bitcoin. Together, we can show to them what bitcoin has and will have in the future.