To be frank bitcoin miners will increase after this halving, just like previous halving and while miners in the US or some other countries might be tempted to move to this countries with low cost electricity another thing they will have to look unto is the fact that in the US it seems like they are paying 30% of electricity they use for mining as tax while some of these countries are task free.
African countries are also among the countries increasing with miners, Morocco was among the top mining countries by ChainAnalysis last year while also Ethiopia is turning to a mining hub
According to data from Bitcoin mining services company Luxor Technologies, in 2023, Ethiopia ranked fourth behind the USA, Hong Kong, and Asia as one of the top destinations for Bitcoin mining rigs. Russian bitcoin mining company Bitcluster has already built the first 120 MW bitcoin mining facility, and companies such as Hashlabs Mining have started building bitcoin mines in Ethiopia for their global clients.
but we don't how the government may react on this in the long run while this will boost the economy of Ethiopia or any other African countries that may be implement this if they have low energy consumption. While country like ours(Nigeria) though we have few miners but our low power supply and even the electricity fee has been a discouraging factor