So the fact that you cancelled an email without taking the proper steps to insure your Apple ID would continue to function is Apple's Fault?
The existence of an email address is irrelevant to the functionality of an Apple ID.
If you new the email was going to be cancelled, you could have gone to http://appleid.apple.com and updated your Apple Id to a new functional email.
If you created a new Apple ID, then the other ID still exists with whichever password you assigned to it before.
Apps are forever tied to an Apple ID and cannot be transferred or merged to another. They will forever require it to update. Which is why updating the associated email address is a good thing to keep your purchases accessible.
If you were incapable of following 4 simple steps to update an email address, then how is that Apple's fault?
Apple cannot make it any easier to update an Apple Id, than to log into it, and update the email address. And click on a link to confirm the email address.
Before updating an Apple ID, its always a good idea to sign out of the services that are making use of it, and sing in agian after the change has been completed.
So really the only person that should wake up, is the individual who cannot follow 4 simple steps.
1. Sign out of Services using Apple ID
2. go to http://appleid.apple.com and Log in. and update email address.
3. Click on link in verification email to verify new email address.
4. Log in again with updated Apple ID to services.