I think people do not realize that there is a huge bonus for the first country to unlock the “negative price energy peak” achievement.
There are some businesses that will only be possible in these conditions and they will flock to the first country with it. Generating hydrogen seems like the most straightforward one, but there are also bio-ethanol processes that require some energy to be profitable.
We see intermittency as a curse, but I think we overestimate the difficulty to adapt to an intermittent schedule and we underestimate the advantage of having time spans with free energy, especially when they happen during the day.