I don't stream music at all, not yet at least. I am a true geezer. But, I do see streaming as the future, potentially. Eventually, we will all be doing it for all music in whatever format or resolution, channel count, genre preference, etc. LPs may be the exception, of course, but you never know. Downloading, as now, for certain formats, resolutions, channel counts, genres, is just a temporary interlude leading to streaming eventually, as is the the need to "own" and therefore maintain your own music files via disc ripping or download or physical media. I would be just as happy, happier I think, just renting my music via streaming, rather than owning, maintaining, backing up and storing it myself on shelves or on my 54TB NAS, which is becoming insufficient. For now, though, no single streaming or download service sufficiently satisfies my own perhaps peculiar needs and desires. So, I am still opting out for now in favor of mainly ripping and occasional downloads.
I think most everyone sees this. Recording labels would love it because streaming virtually eliminates piracy. The only problem is getting there. Part of the problem is disparate sites and software front ends, search tools, etc. some with differing technical requirements.
I look at the retail model established by Amazon in meta terms, though not their current implementation of music streaming/downloading, which is inadequate. It is the idea of Amazon, the retailer, offering a huge selection of amazingly diverse goods sourced from other distributors and retailers, all available to the consumer from one simple standard user interface, one shopping cart, one bill, one payment regardless of the source. They have so much critical mass and clout in the marketplace that sellers, large and small, need to join in with them or lose sales by trying to go it alone on their own diverse sites. So, far, that has not resulted in any downsides to the consumer, in my opinion, due to any abuse by Amazon of near-monopoly power. To me, it is of great benefit to the consumer, offering one stop shopping conveniently at good prices through a simple interface.
I am not saying Amazon itself will provide this for music streaming, and it will not be easy. It might be Roon. They might be closest to it. But, Roon has not yet embraced and adequately supported classical listeners like me, for example, though we are a distinct minority to be sure. Or, it might be someone else who can think big and manage to unify the industry around a single consumer interface to all the music everywhere, not just separate, individual subsets by format, genre, etc. each with their own GUI, subscription or other payment method. The redundancy of many streamers, large and small, cries out for eventual consolidation on efficiency grounds, at least from the consumer perspective.
Time will tell.
Incidentally, Amazon video streaming is already starting to work on this by incorporating BritBox and Acorn. It has become my favorite video streaming service, far outclassing Netflix in selection quality and ease of use, though not yet in quantity. However, so much of Netflix, even their own productions, is trite garbage, difficult to search or to know what is there. I do think video streaming is much bigger than music streaming. So, likely music streaming will follow the lead of video streaming, and lag it, as far as economic structure of the industry is concerned.