No. Currently Firefox is the only browser that can run Spotify and Netflix on my machine. Neither Chromium nor Epiphany do that.
Firefox needs to stay functional for “normal” people who consume DRM media, use Google and visit Websites that break if you block their trackers.
Otherwise its market share drops to zero and webdevs will stop testing for its engine, giving Google full control over the web.
There are more than enough options out there for people who want full privacy.