It's not worth again for mining, even the transaction fee will rise. If the transaction fee is increased to the max people will quit from bitcoin and change to altcoin like bitcoin cash or something, and the miner will quit from bitcoin mining because miner will get ROI longer than usually and the bitcoin price will crash until maybe $100 or $50. In other words it is bitcoin doomsday.
Look mate you are getting it all wrong ab possibly this is the effect people get after reading a lot of r/bitcoin or r/btc subreddits. Bitcoin mining does not work like that. Considering majority of miners stopped mining then the profit of mining will be distributed among those who are still mining and the difficulty will decrease. Also the hashpower which is currently in use by the miners, who would continue in this hypothetical situation would compensate for a large profit.
It is not about bitcoin cash which is a shill-pumped trashcoin made by a liar like Rogver. Bitcoin is here to stay copycats will die.