> One question I have is, is this revenue rate sustainable or it is an unnatural pump that will die out in a couple of years?

The situation is better than that of toiler paper. One human being consumes the same amount of toiler paper during a pandemic that in other circumstances. So, an increase in purchases now means a decrease of purchases in the future.

For video games the increase can be real. During a pandemic, and quarantine, people needs to pass the time in some way. Movies, and video games are popular ways of doing so.

After the pandemic, thou, the need for recreation will go back to normal with the decrease of available time (corrected upwards by the amount of new players that keep on with the habit and downwards with less available income during a recession).