Answer to your puzzle: because as soon as sideloading is allowed, sideloading will become required by the most popular apps.
And then suddenly I lose all the protections afforded to me by the Apple Store, such as easy cancellations of subscriptions, easy refunds of apps that don't work, a layer of protection against malware, and so forth. It also just makes my phone that much harder to use, as finding and installing apps becomes that much harder.
If everybody gets sideloading, that absolutely will impact me directly, and negatively. Does that make sense?
And then suddenly I lose all the protections afforded to me by the Apple Store, such as easy cancellations of subscriptions, easy refunds of apps that don't work, a layer of protection against malware, and so forth. It also just makes my phone that much harder to use, as finding and installing apps becomes that much harder.
If everybody gets sideloading, that absolutely will impact me directly, and negatively. Does that make sense?