As far as financial value, it appears that UMG made a large claim for damages against NBC/Universal, the landlord there, and settled the matter for "an undisclosed sum." How large is not reported, other than a recollection from the former employee interviewed. This is known from a review of "litigation and company documents, thousands of pages of depositions and internal UMG files" the author was able to review. There was some commercial value, not even considering social and historical value, and UMG pursued a claim for that value, and got a settlement.
As far as the other arguments of over focus on 20th century recordings, there is good new music, it doesn't matter in the grand scheme/don't worry about it, I say maybe there is SOME truth in that. But if we have the ability to preserve what amounts to factual information (recordings of art that occurred) now, when we didn't have that ability in the prior centuries, it seems to me to be of value to do so. As a record. I would think if we had ways of recording what happened in the centuries before more accurately, there could be value there.
And that there was a loss in this case.. The commercial value can be debated, and it is apparent from this thread that a lot do not believe in a greater social value in preserving this information and art. I take the other view, that there is value in preserving that. That, of course, is open to discussion and debate.
As history is spun over the years, so that decades begin not to resemble themselves any more, it seems that since we can preserve information through good digitization and renewal of that resource, and preservation of analog information, it should be preserved, in only so we can go back and hear what things actually did sound like. I would suggest that preserving other forms of information in terms of scientific, mathematic, historical, (one can go on) work would also be of value, beyond a bunch of encyclopedias and/or wikipedia.
There are further reasons discussed as to why in the "shitty rag" if anyone cares to read about them. If not, no need to worry about it, as has been pointed out.