I've had the free Deezer ad service on my (now sadly defunct, thanks to Logitech's brilliant management) Squeezeboxes. 16/44 streaming is a step forward but they are (in Europe) not alone, with WiMP and Quobuz... and Ultra High Rez Pono.
That's pretty impressive that they're able to amass that many tracks at that audio quality. I find it's a pain personally to download FLAC myself unless it's a bit-torrent unfortunately. Few places sell FLAC.