User blog comment:Jamie/Episode 10 - Cancelled Comics Cavalcade/@comment-1895174-20140611070902/@comment-4651179-20140613012912

I can also provide another argumented reason. By relaunching the title, the feeling of change is increased, as "it's a change so big this is even a new title!"

Actually, two of them. Slott and Marvel stated numerous times that they wanted to make the readers feel that the change was permanent as much as possible, Slott even admitted lying to a little kid about whether Peter Parker was going to return or not. So to keep the title as The Amazing Spider-Man wouldn't make much sense.