Another effect is helping to improve the resilience: By using curtailed electricity which is available at a lower price it is financially lucrative to use hardware for a longer period, which is diminishing the mining equipment acquisition cost, and thus improves the resilience of the system. This further improves the overall ecological footprint as less new machines must be produced. Another consideration is that curtailed power will not be available in the same way all over the world.   Therefore, there is a certain risk that political policies in these countries could affect the stability of the blockchain. It is important to note that a similar risk also exists in classical PoW blockchains. In the bitcoin example, only 3 countries are responsible for over 70% of today's hash rate[2]. (9/10)