Just my 2 cents...

As we see the lightning network grow for bitcoin, I can other forked bitcoins (i.e. bitcoin cash/bitcoin gold) take a hit. Reason being is bitcoin is the "original" cryptocurrency coin and one of the main things holding it back was the high transaction fees and backlog buildup.

These forked bitcoins benefits would only be to the miners. Once lightning network is large enough we'll see the adoption of bigger institutions taking advantage of this and hopefully drive up BTC price in the near future.