I don't agree with this premise. FM Radio is definitely more corporate today, but I grew up in the 90s and my memories of FM radio are not fond.
For my whole life it has always been materially the same, shitty, experience: occasional good songs interleaved with mediocre ones and a hefty dose of annoying unskippable ads.
The difference is that when I was a kid we didn't have streaming or even mp3 players so we just had to put up with the ads. Today I can just play songs locally off my phone via Bluetooth. No ads, no DJs, just the music I enjoy.