The gaming market already has a "casual" platform called Nintendo. People who want a good quality product, a franchise they recognize, they can pick up a game get in the action, and put it down easily. Without getting into benchmarking streaming, and "console wars". During the pandemic lockdowns, every nerd girl I knew was playing "chick crack" also known as Animal Crossing 😛 .Its a Fantastic game! You won't find an equivalent casual masterpiece in Apple Arcade.
Apple Arcade however is less than casual, it is curated mobile trash. Worse, a good percentage is yesterday's mobile trash. Sure temple run was fun to kill a minute 10 years ago. But is it the tentpole of a subscription service? Occasionally you might find a great indie title like Kingdom that is in there, but that came out 8 years ago. So no, Apple Arcade isnt even a bastion of Indie game development. For that, I go to Steam and see what "early access" titles are in the works I can support. If I want to know what few good titles are on Apple arcade five years from now, I go on Steam today. That's a huge problem.
The tragedy is Apple Arcade is over a decade late. When the appstore came out back in 2008, there was a flurry of mobile game development until at least 2012. With some real innovation in there. But Apple didn't curate it properly and released IAP and it killed the market outright. They let cheap mass-made Chinese garbage games flood the app store. It became impossible to find the diamond in the rough. Apple Arcade is just any competently put-together game that doesn't have IAP. The fact that that's the bar to cross speaks about everything wrong with mobile gaming.