The fantastic fidelity you are experiencing with streaming is mine as well. At times the streaming version exceeds the sound quality I get from my excellent analog rig. But you are correct about the version being offered. Since streaming is in its infancy I am sure over time catalogs within services will become more robust with various versions and extended information available. Right now services are trying to build the biggest… some the most high Rez (Qobuz) best sounding libraries. It will come.
,On the other hand once I got used to streaming my world of music expanded so far beyond my 2,000 vinyl and 2,000 CDs that honestly if one album doesn’t have the very best ever mastering… I’ll just go on to ten other albums. Once in a while I’ll find some album and buy a heavy vinyl recording of it… although the last time I did this the streamed version sounded better… actually the last two.