It's not just the grudge set upon against a well-known company over a trivial ripping of a single Japanese word and train decor collab project, but the suspect might've done other things prior to this, but no matter how far it all went downhill, once he's out of the hospital bed within days to weeks, it's off to the death row room for him after a trial.
All I can say for now is that 'KyoAni' being the first outside of the Tokyo metro area going down have to catch up with so much of their lost paid artwork contributed to the fire, since a lot of theirs with ink on it is made out of paper sheets. On the other hand, my best suggestion for them is to move on to another place in the country and keep working on what they are doing, I hope they have backup copies beforehand.
The internet does not lose all their uploaded artwork overnight, so we are feeling free to look through all what they did prior to the fire. They might however have to put their official anime sites on hold for a little while or even have to shut it down.