Because the US-based Music industry - ASCAP, BMI, Seasac, and SoundExchange - have reached into other countries and told them that, if your stream reaches listeners in the USA, they must pay the massive royalty rates they demand. The alternative is to geoblock listeners in the USA so they cannot listen. As of this date, TorontoCast has decided to geoblock the USA beginning on 2019.01.12.
Sadly, the Music Modernization Act which replaces the DMCA has really only made things worse for Internet radio. Whereas we absolutely want artists to be fairly compensated for the music they grace the world with, we simply cannot pay extortion-level royalties when we realistically have no revenue model. There used to be safeguards in place for Internet radio, but the music industry has, over time, worked tirelessly to eliminate then and pushed us all out. I would seem they have won at this point. But who actually wins, I might ask? The artists? No. They have far fewer venues on which to be heard, and the independents may never be heard now. The audience? No. They now have far less choice with only the likes of iTunes, Spotify, Google Play Music, Amazon, etc. to turn to. Those venues have little reason to welcome new artists over signed label acts, so you get what they give you and nothing more. Most people are blissfully ignorant to this anyway, and so they don't know anything changed or that they should care. The Performance Rights Organizations? No, but they will realistically only see a tiny down-tick in revenue since most of what they get comes from the aforementioned juggernaut music services.
We will continue to monitor the situation, and if the climate for Internet radio ever improves to the point where the US-based music industry favors cooperation in the promotion of artists and music over extortion, we may resume operations. Obviously, I'm not holding my breath.In the meantime you can still tune in using these links until around 2019.01.12. Girls Rock Radio or Country Girl Radio