I used a standalone MP3 player for years in addition to my phone, because I couldn’t find a phone with a decent DAC, but now the existence of Bluetooth DACs means I have less to lug around.
Fair enough, but that still makes you a niche subset. For a vast amount of people in the world, streaming music suffices.
A couple years back storing music was the case in emerging markets too because cell phone internet was expensive and terrible. However, now with 3G+ and cheap plans the number of people who want to store music and listen to it is reducing. Nothing wrong with services adapting IMO.
You on the other hand are right to have your own preferences with storing and listening to music (maybe it is a curated list, old songs not available for streaming) - valid reasons. But then you should find alternatives.
I mean in all fairness, For the price gouging I see for storage on phones, I can buy an mp3 player (with a nice DAC), a huge SD card, and then load it on there. That's why I don't store music on my phone.