A "partial lack of interest" does not equal "no interest". Every day the 2 kinds of miners (network supporters and make money-ers) face the same questions:
1 - Am I going to mine today, and if so which coin?
2 - Will I sell these coins or hodl them?
For the "make money-ers", the decision is heavily influenced by price.
I would argue that there is either a weak or very weak correlation between hashrate and future price. There are so many other factors that influence future coin prices; development, adoption, competition, news reporting, non-crypto financial trends, etc.