What makes you think that? It's a very widely-used and stable format, cited as a great format for archival use. The Library of Congress has a page that goes in

What makes you think that? It's a very widely-used and stable format, cited as a great format for archival use. The Library of Congress has a page that goes into some depth with respect to their sustainability analysis for the format. https://www.loc.gov/preservation/digital/formats/fdd/fdd000461.shtml https://www.loc.gov/preservation/digital/formats/fdd/fdd0004...