I don't believe we will ever have 'too cheap to meter'. Unlike internet/data, which is limited by the capacity of the link, a residential power connection can pull more 'value' via electricity vs transmitted bytes. It is difficult to run up thousands of dollars of cost on a residential internet connection, whereas if you consume a lot of energy, you could easily have an energy bill in the thousands of dollars. Electrical Energy moves a lot of value very quickly, enabling a machine to do work.

If we had a too cheap to meter situation, it would end in a tragedy of the commons where some users would consume significant power; eg: bitcoin mining.

If the long term price of Bitcoin is somehow related to the average price of energy globally, which is going to be mined for many more decades, Bitcoin makes energy un-'too cheap to meter';

With Bitcoin we mining have a strategy to convert surplus energy into digital capital. Thus it must be metered or else 100% of the "free" energy will go into Bitcoin mining, it is critical that energy has a price in order to signal resource prioritization.