That's a consequence of the ASF largely serving as a way to dump software that isn't commercially viable (or wasn't to begin with). The idea being that a community can form around it, consisting of former users and developers. Taking software to the ASF is accompanied by a grant to the ASF, and I think it's a decent way to stop developing a product, or is at least miles better than a torched earth approach and stop sales, support, development immediately, firing developers, etc. Not everything will live on ofc, but at least one can try.