People would also want to bring their own wine to every restaurant and some would love to bring their own eggs and ask kitchen to make it for them at a discount - isn't it better to just put few benches as picnic area outside to make everybody happy?

You can't meet all demands of everybody at the same time because what they think they're entitled to is mutually exclusive.

Let's not kid ourselves - Apple won't give full, unrestricted access for sideloaded code ever. It's going to run in some kind of highly isolated enclave at best, with grayed out icons, warning sign overlay, scary long list of permissions given when installing, untrusted code popups when launching, permission re-confirmations when running, without access to ie. background code execution, limited apis etc. - they must be brainstorming any loopholes left by snail speed EU bureaucracy as we speak to make it as user unfriendly and limited as possible.

All that wasted energy could be channeled into something that actually is good for people, gives them freedom while preserving Apple's deserved profit participation in the market they've created themselves out of thin air.