With the recent halving of block rewards, the incentive will be lower than previous for miner. On the other hand, the cost for them will still be same which may not be profitable for a while (I'm not sure about this). If it is true, is it possible that some miners will just leave mining for a while until they get back in a equilibrium or in profit? What fo you think?
Many people forget that the BTC miners are making their revenue out of the transaction fees from transactions that were executed on the blockchain.The block rewards are just additional revenue for them.
The mining reward might be reduced,but the transaction fees remain as a relatively stable source of income.TX fees on the Bitcoin core blockchain might go up,like they did in the winter of 2017-2018.
Smaller miners will leave the mining industry for sure.The bigger miners will have to improve their efficiency and move their facilities to places that have cheaper electricity.