Btc dominance has overshadowed all other alts without a doubt, and from the look of things it seems this will continue for sometime, it seems as if the demand for btc keeps increasing as new investors put in money in the market, people trust their investment on btc than other alts hence the continue dominance.
Honestly, I do not like the tough price dominance of bitcoin in the cryptocurrency market. Of course, there are many useless altcoins on the market, but I would prefer that each of them develop without such dominance. Now, even the best altcoin projects have been in a price decline for almost two years due to bitcoin. Because of this, many began to lose their general interest in cryptocurrency. I think that the price dominance of bitcoin will not last long anyway. The cryptocurrency market will find a way to harmonize the relations of its participants.