Why?
Why does Verizon need AWS spectrum?
bc by buying the aws spectrum they effectively stop tmobile from buying it and rolling out LTE, this was delibertly done to stop competition from T-Mobile when it became clear that the ATT deal would fall apart.
So in larger cities when the 700MhZ spectrum gets full, people can fall back to the AWS spectrum for LTE. This will be handy when Verizon launches Voice on LTE.