@laoman
On Qobuz, among the 29 available Ring recordings I cited above, some are indeed excerpts (~3 hrs or less). Others appear to be full Ring versions (or presumably as "full" as the original physical medium offered), including:
James Levine, 1994 on DG, 14 ":discs", 15 hrs 20 mins.
Clemens Krauss, Bayreuth 1953, 13 "discs", 14 hrs 12 mins
Hans Knappertsbusch, Bayreuth 1956, 13 "discs", 14 hrs 34 mins
Wilhelm Furtwangler, 1953 Rome, 13 "discs", 15 hrs 2 mins
George Solti, 2014 Decca recording (MQA), 4 "discs", 14 hrs 36 mins
Herbert von Karajan, 1998 DG, 14 "discs", 14 hrs 57 mins
Karl Bohm, 1973 Decca, 14 "Discs", 13 hrs 38 mins
I suspect this is more Ring than you're likely to find on CDs at your local Best Buy. Now, you could get a vinyl box set on Amazon (Furtwangler 1950, 11 records) for $98.99. Many streaming service subscribers do also own CD players or turntables. Some of them may use streaming primarily for "discovery".