the reason why this question keeps coming up for different users every day is that the thing they call "market dominance" has nothing to do with actual "dominance". if we define what that number means, i believe a big part of the question is answered.
in short what CMC is calling "dominance" is simply division of bitcoin's market cap (with its ~18 mil supply) by the total market cap of 2000-3000 altcoins (with their total supply of hundreds of trillions).
so obviously when bitcoin goes up $1 its market cap goes up $18 million but if those coins go up $1 their market cap goes up hundreds of trillions. so in order to go up the same amount in market cap as bitcoin they just have to increase in price a very tiny fraction of a $1 which is why that percentage which falsely referred to as "dominance" shrank in first place and that is also why it is rising back up again.
Perfect! I have my opinion as people incorrectly pay their attention on dominance, bitcoin or altcoins.
The true indicators for growth of bitcoin or altcoins is total volume. If we keep our minds neutral to see the fact of increases in dailly volume of bitcoin and altcoins since their all time highs in price values more than one year ago. This one, and the fact that most of altcoins has their volume fallen to nearly zero or zero, I do see the growth of altcoins, good ones, I meant.
If 2 years ago, we have 3000 thousands altcoins with all good volume, but now we have only 1000 altcoins that have daily volume, and their total daily volume increased compared to figures of 2 years ago, it is truly a good signal of growth, even their prices temporarily fluctuated in bottom ranges.Bad altcoins actually comes to their death periods, and I do believe they won't have minor chances to return because investors have matured more significantly since the crashes of bitcoin and altcoins last two years. Even those shit altcoins boosted by their team by whichever shady methods, investors will be very careful to reinvest in those shit altcoins.
The era of shit altcoins have gone, from now on we will see good recoveries of good altcoins.