Go click through those links. Most of them are hardly maintained. E.g. last static HTML dump was in 2008. Current enwiki raw data dump is in progress and read

Go click through those links. Most of them are hardly maintained. E.g. last static HTML dump was in 2008. Current enwiki raw data dump is in progress and reads: "2017-05-07 23:24:34: enwiki (ID 13918) 103 pages (0.0|1.2/sec all|curr), 921000 revs (14.4|11.4/sec all|curr), 100.0%|100.0% prefetched (all|curr), ETA 2019-01-23 15:17:29 [max 779130995]" There are real logistical challenges in making these dumps and making them _useful_. For all Wikimedia's spending, they have not invested sufficiently in this area.