It will eventually go back to the pre-2017 levels (i.e around 85%). Back in 2017, the ICOs took the altcoin market share from 15% to around 60%. Now this has been reduced to somewhere around 30% (including the Bitcoin forks and the stablecoins). Very few of the ICOs have been successful and even fewer have maintained the momentum over the years. So you can completely remove whatever jump the alts got from the ICOs.
My guess is that by the time the market cap reaches the ATH levels that we saw in December 2017 (i.e close to $1 trillion), the Bitcoin dominance will be somewhere around 85%. That means that Bitcoin itself will be having a market cap of $750 billion to $850 billion, resulting in an exchange rate of $40,000 to $50,000 per coin. We can expect this in the next 12 to 18 months.
That's certainly true, mate. The biggest rise of altcoins was largely attributed to ICOs themselves. Ethereum was one of the altcoins on the market which benefited the most from ICO gains. It seems that 2017 was the golden year of ICOs bringing a wealth of investors like never before. By that time, Bitcoin's market dominance was pretty low compared to previous years. Once the SEC decided to crackdown on ICOs, things have changed drastically for the crypto industry. Now, the ICO trend is a thing of the past greatly diminishing the market dominance of popular alts like Ethereum and Litecoin. It's good to see Bitcoin gain traction once more, since it's the original cryptocurrency that started it all.
Before the crypto craze, Bitcoin's dominance was well above 80%. We're starting to see the same situation repeating itself where Bitcoin is rising back towards its original levels in market dominance. Sooner or later, Bitcoin will gain 90% through 95% of the whole market share leaving other altcoins in the dust. I guess that people are realizing that most altcoins don't have real use cases, selling them in exchange for BTC. In the future, we may be left with a few altcoins while Bitcoin remains as the world's largest cryptocurrency by market cap.
Nonetheless, I wouldn't worry too much about Bitcoin's market dominance rising fast. After all, Bitcoin is the reserve currency of crypto where many altcoins depend on it to succeed. It's impressive to see how far Bitcoin has reached since its inception back in 2009. Hopefully, it'll gain massive adoption within the mainstream world as it improves its blockchain network to handle millions of TPS. Just my thoughts