To change to balanced connections, I think we need to ask ourselves, what problem are we solving?I keep reading that balanced has more noise and distortion than single-ended/unbalanced. That does not match my experience as a designer or user.
Look, I have a fair amount of balanced gear here. I have a spool of Mogami Neglex 2534 (bought it decades ago, what a good move) and a bunch of Neutrik XLRs and TRS and TS phone plugs, and RCAs. When I need a connection, I fire up my Weller. My keyboards, guitar, V-Drums, and Stick aren't balanced, but some of my outboard gear is, not all, and of course my mixer is, my monitors can go either way. Pro audio gear is mixed, the most likely to be balances is gear closely associated with mics and preamps (compressors, for instance, and probably tube gear).
But the fact is, only my mics need it, to the preamps. It's all in one room, mainly 20-25 ft cables, shorter interconnects.
Changing routine audio listening gear to balanced i/o is solving a problem that doesn't exist, and making it cost a little more.
I'm not saying I have a problem with it, but if you're going to mount a campaign for change, it probably should be for one you can hear. But, companies will make it, and you can vote with your purchases, for whatever the benefit. For my computer, I bought iLoud MTMs, they have a combo jack and can take TRS or XLR balanced, or TS unbalanced. And a Topping DAC that has RCA or XLR out, so I made a couple of one-meter XLR cables and went balanced. Did I do it because I want to ensure the best sound? No, it just made no sense to make cables with RCA on one end and phone on the other.
I just talking about expectations. Anyone who thinks going XLR for typical listening environments will step them up to a "pro" listening experience doesn't have a good understanding. But the click of inserting an XLR is definitely more satisfying than pushing in an RCA plug.