Not sure what you mean by "don't exist". I meant that they could write scrapers and fetch such information periodically from, say, recording companies' websites

Not sure what you mean by "don't exist". I meant that they could write scrapers and fetch such information periodically from, say, recording companies' websites or more reliably, from e-commerce stores. I'm saying so because I know plenty of 3rd party fandom/crowdsourced databases are doing exactly this, for books, CDs, etc. The data obviously need some manual checks later, but this step saves lots of time. Again, Discogs already have a very complete database for old releases, especially for vinyls. But what I'm talking is that they are lacking for newer ones (CDs or digital releases) and just provide a systematic (and tried) way to improve in that regard (considering their goal now is "everything"). For something in 1962? Sure you're right. But you don't really need some fans to own a copy to prove the existence or get information for a hit album in 2010s.