That's the point. Separate the "smart" components, which are short-lived and at the whims of the manufacturer, from the "dumb" components that are not at the mercy of constant updates, online accounts and sunsetting. You can connect to Shopify from a chromecast, airplay, bluetooth from a phone or anything else yet to be devised.

My stereo is from 1973 and the Raspberry Pi I have connected to its inputs can play Spotify just fine and will get updates for much longer. Or I could plug my phone up. Or a more consumer friendly device like a Roku. Or a bluetooth module that pairs wirelessly with my phone. If and when I do decide to update the Pi is a single device that costs $40 or so instead of having to do that much per speaker. Sonos devices just aren't worth it, they're insanely overpriced and provide little to no real benefit over any number of other options that separate out the stereo from the thing that plays music.

Sure, because one of my old laptops has been relegated to music-player duty. If I hadn't had a spare laptop it'd have been a spare phone. Or maybe I'd add a Bluetooth dongle to stream media to it from any other device.

The Yamaha TSR-6750WA I bought in 2013 (7 years ago) does. Still.