Every so often a reel-to-reel shows up at Goodwill. Usually it's an Akai brought back by a Vietnam Vet
In the 60s-70s it's not clear what the market was for a home/consumer recorder.
some commercial recordings were released on tape. I don't know if any "audiophiles" thought that was superior to vinyl LP.
Quality on pre-recorded tapes was all over the place. I had quite a few commercially pre-recorded tapes at 7 1/2ips that were easily equal to, if not superior to the best vinyl recordings. Ampex used to turn out some really good copies as did Bell and Howell. Columbia House (remember their record club?) actually had a R-to-R club. Anything they turned out was absolute crap, recorded at 3 3/4ips and couldn't compare with vinyl of the day. Unfortunately, even if you knew what label had a signed artist, if it came through Columbia House, is was probably licensed to them and produced on their own equipment. I have no idea how many tapes I sent back due to excessive dropouts. Fortunately, we had a record shop in town that catered to audiophiles and they carried a pretty good catalog of pre-recorded R-to-R stuff, usually duplicated by the better houses. I had about half a dozen of the Beatles albums on 7 1/2ips dupes. If I recall correctly, they were duplicated by Ampex and were excellent.
But most of my collection came from dubbing first play vinyl recordings to 7 1/2ips on BASF, TDS, Scotch (3m), or Maxell tape. I also used a lot of Radio Shack Concertape, which was a whole lot better than its price would have suggested.