Bitcoin will continue to become profitable in the next decade because it has a lot of more rooms to grow. The excitements are temporary gone beause of its price downfall and prolonged bearishness in the market. The bullrun that happened in 2017 may not happen again in the following year because it has to accumulate first for a year or before the excitement return to the market again.
Bitcoin will remain the most profitable and stable cryptocurrency for a long time. As you see, its volatility is very low now, and it can be a signal that close to December - january BTC will start running up.