maybe miner will sell his antminer
It depends on the bitcoin price. If the price doubles after the halving, and the difficulty does not rise, the profitability is the same.
Yup I second this. I am expecting that a lot of smaller-scale Bitcoin miners will just give up and leave the mining scene after the halving hits and this will ultimately bring the difficulty down due to fewer bigger-scale miners remaining and if the price really increases by a nice percentage this would probably make for an equal or nearly similar profitability like before the halving has commenced. The price is at $560 today. So this is like a 25% increase pre-halving. I think we are getting there guys and we still have a lot of time