There’s streaming, CDs of course and (the revival of) vinyl. While there is a path from vinyl to CD to streaming is, it looks different with streaming when it comes to older vinyl only releases, since there doesn’t exist a digital copy at all. I myself own a lot of rare vinyl records of the late 70s and early 80s, some LPs, some 12″ or 45rpm singles, that are not infrequently limited to a few 100 copies.
I would very much like to digitalize these vinyl records, but I fear the thousands of hours of work, and also issues of quality. While this is so far a personal “problem”, there is of course the greater issue of cultural preservation and access. The Internet Archive pursues exactly this intention.