Do the math on block rewards vs. the cost of electricity for miners. Many mining companies are already in the red.
Then plot the block reward halvings and increasing electricity prices vs. time.
Bitcoin's market cap will have to increase by ~$2T this epoch, ~$4T next epoch, and ~$8T the epoch after that (and so on) for miners to stay solvent.
I hope it does, but I wouldn't count on it.
