I've been interested in streaming games services since 2010 with OnLive, which was also available for Mac, but since it's closure there hasn't really been an alternative. Enter NVIDIA GeForce Now, a new cloud gaming service that allows you to play games from your Steam and Battle.net libraries.
I personally really enjoy what NVIDIA GeForce Now is bringing to the table. Providing a means to play the games I already own and can purchase from Steam and Battle.net is what cloud gaming should be. They have a list of supported games, but you can easily install and run any unsupported game you own in Steam and Battle.net, and I would fully expect big titles like Destiny 2 to be officially supported as well.
NVIDIA GeForce Now doesn't use any of your local hardware, and instead streams the game to you from a remote Windows PC provided by the service that is running high-end NVIDIA GPUs and Hardware, providing a very smooth and enjoyable gaming experience. You can sign-up for beta here: https://www.nvidia.c...rce-now/mac-pc/
You can also see an in-depth look at NVIDIA GeForce Now below, where I try out Overwatch, Warframe, and the new Dark and Light.