D3 and D2R on GeForce NOW

As the title states, Diablo 3 is coming to the GeForce NOW cloud gaming service. This is positive news for those who want to play D3 on portable devices without depleting their battery in 2 hours, or direct from a Smart TV.

https://blogs.nvidia.com/blog/geforce-now-thursday-more-battle-net-games/

Several years ago, I remember Blizzard games were on GeForce NOW, does anyone know why they were removed?