I read - in the source below - that Litecoin and Dash are getting more popularity in the Darknet, as a consequence of the Bitcoin network drawbacks, namely speed and fees.
Probably this trend might or might not (depends on the size of the darknet, which I think is huge anyway) affect the balance of the whole cryptoshpere, and those two altcoins may exhibit huge prominence for this reason by end of the year.
https://cointelegraph.com/news/is-darknet-done-with-bitcoin