Well, basically block halving will affect miners financially.
Unfortunately, miners needs to upgrade their computer hardware such as GPU's for them to be able to solve blocks faster, since every halving, Bitcoin will become harder and harder to mine.
Eventually, some small time miners will shutdown due to the expenses in upgrading, electric consumption, and the continues halving of rewards.
Only those who have big mining farms is capable of sustaining their business.
You can't mine BTC profitably on a GPU or in your browser. The biggest factor in profitability is the cost of electricity. A small miner can make a good profit if they can get their electricity at a low cost.
Agree, and that's very unfortunate if someone who has small mining hardware was located in a country where the electricity cost is high. I only know some countries that has a low electricity cost such as Sweden and China. I was thinking, maybe there are a lot of miners who's willing to move to this countries to get more profit than the usual profit they get from the places where electricity bills are so high.