People are moving their alts to bitcoins because of the fork. I expect them to move back to alts after.
But yeah, Bitcoin never really lost dominance. It just regained some lost ground is all.
The Bitcoin still number one among all crypto currency coin as posted on the wall of the trading market, with the strong fundamentals, high level of confidence on the market, plus the global acceptance is growing, Bitcoin investor are coming in, and actively participating in the crypto trading market on Bitcoin. This just show that Bitcoin remain the favorite from all other ALT coin posted on the market, even with the issues posted vs. Bitcoin on Digital transaction, like the issues on Banned, the Scammer, and the persistent issue on Regulation, Bitcoin price value able to stabilized favorable to investor on the trading market.