That is true, the volume on txbit is low at the moment however it is very hard for new exchanges to attract traders to start trading on their exchanges. txbit has listed some popular coins but still it hasn't attracted people to come and trade on txbit. I think that it will take a good 12+ months before we start to see more trading volume and remember that CMC are yet to list txbit which can help once they list txbit.
Binance did not need to much time to take over both Poloniex and Bittrex. Crypto exchange is a highly competitive industry, but to be successful new exchanges do not only need time, but also need effective marketing. That is likely what txbit.io has been lack of months after its birthday. Another minus point is txbit.io has not yet listed on coinmarketcap.com. Visitors might hesitate to join exchanges that are not listed on CMC.