The prevalence of FTTH can be explained by the Japanese government's forced local loop unbundling of NTT and very low charges to connect for new Internet service providers (ISPs), leading to new ISPs connecting DSL with low cost and being able to charge cheaper prices due to having a smaller scale operation to challenge the incumbent NTT into using its greater finances to lay fiber to the home to distinguish itself from the competition with higher speeds and also incentivizing some other ISPs to explore fiber to the home, although it remained the dominant fiber provider.