Bitcoin dominance has been increasing during this bear market. I suspect that as crypto snails along toward mass adoption, the alts will begin to take the majority of the market share once again. I hear @tonevays say the opposite (that the bear market isn't over until bitcoin pulls away from the alts).

If LN is successful, then Tone may be right. The fact of the matter is that most of the rest of the alts suffer from heavier centralization and are not nearly as secure. I think bitcoin is the Yahoo! of internet finance, but it remains to be seen which one becomes the Google. However, I don't believe that we will have just one currency. Andreas Antonopoulos has said that money is an expression of value and therefore like a language. There will be an English of crypto, but the others will not all go away.

Worst case scenario is that some banker coin becomes the Google of internet finance and we submit to centralized control. That's a recipe for book of Revelations consequences.