Altcoins are making a comeback now IMO together with Bitcoin. Some says that it'll be time for the altseason because the BTC dominance is not getting any bigger compared to last year.
There was a time in the past in which the bitcoin dominance was way above 90% and I do not see why those days may not come back, most altcoins are trash and they are never going to recover and the few that have the potential to recover have been in a bad shape for years.
When you take into account the halving will happen in just a few months and how most investors are interested in it I will not be surprised if the price of most altcoins begins to go down while the price of bitcoin begins to go up indicating that people are selling their altcoins to invest in bitcoin.