So you mean how WeChat and Alibaba do it, and are allowed to do so by the App Store. Then why hasn't Meta done that? Perhaps they don't care to? Not that the Facebook app isn't already hugely overstuffed.
Because Apple bent down for WeChat and Alibaba, but Apple won't do it for Facebook?
I'm 100% sure that if Facebook could have an iOS app store, they would start one. It's worth all the work for the improved tracking alone, as app download ads are a big part of Facebook's mobile revenue.
The GP is talking about Meta embedding its own app store within the Facebook app, not about Facebook creating its own iOS app store. An "internal" app store would still be subject to the same restrictions and security that the actual Apple App Store already has. I don't believe the mini-apps within WeChat or Alibaba's apps can flout those regulations, but it's China and those are big apps so who knows.
From a technical perspective, I'm not sure how hosting littler apps within your own app, which is already on the Apple App Store and subject to its review process and rules, would allow you access to improved tracking.
On the subject of a Meta third-party app store independent of Apple's control- yes, there is motivation there to do that, but I am dubious of how much of a threat that is to the end user because:
1. Apple still maintains control of iOS and can restrict invasive tracking from the OS level.
2. I'm not actually convinced that Meta, Google, Amazon, et al are really capable of executing successful alternative app stores. They would need to make it a sufficiently seamless and friction-free experience, and offer enough incentives for users to overcome having to sign up for yet another service just to use the apps they already have access to.
