Exactly that's what we witnessing right now, investors dumps their altcoins to shift their funds to bitcoin. Gone are the days that shitcoins used to be the go to for investors if they wanted to earn quick bucks. Alts have suffered the most in this bear market while bitcoin remains above $6K which we can say that we have reach bottom already.
If Bitcoin dominance is more than 50% it means bitcoin is in more demand as compare to other currencies. Its a sign of bull run of bitcoin. Earlier this year there was a big rise in bitcoin's dominance with so-called alt coins falling back across the board ahead of the bitcoin price rising to highs of $8,400. We can see again a upmove in bitcoin price again.
Tend to disagree, dominance is not a sign that we are in bull run. Last year we didn't top 50% but still the market continued its astronomical growth until the bubble has been burst. The rise in dominance really means that investors are likely moving from alts to bitcoin because its the logical thing to do.