Given the possible role of demography and inequality in bringing the neutral rate to low levels, it is plausible that low neutral rates persist for the foreseeable future. If so, there are some implications to consider. A low neutral rate in a low-inflation world means that the economy could be more frequently constrained by the effective lower bound on nominal interest rates.
It becomes harder to stimulate the economy when needed. The central bank must resort to other measures beyond reducing the cash rate to support the economy. This is one reason why central banks have inflation targets that are above zero. Another implication is that it can make it harder to achieve a desired rate of return.