I am not sure BTC could survive another year of downtrend and rising transaction volume, I am thinking "Tragedy of the Commons" there. Running a full node, service or pool would become more and more expensive, for ever diminishing returns.
Yeah, I think so too, not only that, but miners will be squeezed for real under 100$. Already the majority of small miners is out of the game and only the most efficient are still here. Once we reach a critical point between the cost-basis and the value of btc we will face some huge problems with how the network runs, the blockchain could basically stop for months since the difficulty only adjusts every 2 weeks. We are already seeing the effect of this prolonged trend in how slow confirmations are lately.