…if a Focus Fusion device can produce it for $0.005, while selling it a peak prices for a few hours per day, the cost of the electricity used to generate hydrogen would be very low. The Focus Fusion devices could be located at the location that the hydrogen is required. The electricity could be shipped over the existing transmission lines.

Even with free electricity… hydrogen costs would be driven by everything else (compression, storage, transportation, etc). So at best it may provide cheaper hydrogen than we currently have… but being an inefficient energy carrier, it is still much worse to use for most applications.

So as I said, If Hydrogen is needed on THAT site, and hydrogen is the required form of energy for some industrial application, AND that application doesn’t already have waste hydrogen (as many already do)… then FF would be a good fit.
… but we are talking about niche cases here… whereas electricity powers MUCH MUCH MORE. And for applications that use electricity for power… it is much better to avoid conversions.. and just keep FF energy as electricity.