IMO, if a company writes off something like this, it should become property of the government for a short period like 5-10 years (to allow them to attempt to recoup the lost tax revenue from it) and then become public domain. That way, the people involved in making it still have something to show for their work rather than it being deleted from history as though it never happened. Also, if the government (and citizens) is sharing in the loss due to the tax write-off, then they should have the opportunity to minimize the loss using whatever remains of the written-off assets.