I think the reasons for this result are:
1. The end tour is 3D, which leads to misjudgment. In fact, 2D gamers and CP have been forced to play on the page. But in essence, end-game and page-game still share the same platform: desktop computer.
2. The form of page tour has not yet been born on mobile phones. In other words, ipa and apk need to carry end games+mobile games+new junior players in the PC era.
3. Mobile gamers are more leisure than page gamers, and even a large number of non-core gamers such as you, my wife, parents and children have joined the mobile gamers camp.
I don't usually answer questions in Zhihu, except today. Besides my nonsense, cocos2d-x v3.2 released this week already supports 3D model loading and 3D skeletal animation. I think 2D and 2.5D games will last 1 to 2 years.