Every third party store offering would basically need to replicate what Apple does.
Not necessarily cheaper or better for developers.
- They take a commission like Apple
- They need to host the stuff on servers<
- They need to have a criteria list just like Apple with what is acceptable
- They have to verify apps, reject malware
- Developers need to fill paper work to sign up including stuff for taxes
- They have to prevent someone to take an app from the Apple App Store from one developer and upload it as their own to the new App Store.
- Developers would still need to sign up with Apple to get their developer certificates
Not necessarily cheaper or better for developers.