Bitcoin is not going to become rock solid in the near future because it is too speculative in this period of its lifecycle. We now see money flowing into altcoins and thus Bitcoin is kinda being starved. It naturally leads to thinner orderbooks but that, in turn, means Bitcoin is more susceptible to sudden dumps and pumps as there is less liquidity in the market and consequently, it takes less financial leverage to move the price in either direction
I dont think there is any guarantee that most of the altcoins they are throwing money into that is presently making bitcoin stagnant will last the way bitcoin has lasted, so many altcoins will still come up in the future that will push these existing ones aside or make them irrelevant for life, and many people that are fully aware of this knows that Bitcoin is the only one with the product that will last for life, so what they will do is to make Bitcoin an asset to hold for long, while altcoins will just be strictly for investment or trading, as people hold it for asset, we will be seeing some increase in price with lots of stability.