yup...the chinese corps will manufacture cheaper and cheaper and the knock-offs of those will be equally competitive and the quality will (like all heavily exploited tech) deteriorate abysmally until it just isn't worth buying the junk.
No...until the "next big thing" comes along ...and I think that the NIT's from the 770 up to the 900 were the glimpse of the pocketable market in phones to come...true computers in the hand that... in the end... could make a call...
The NIT's were just ahead of their time.
And I think that time is well nigh.

After that...well..
phones are pretty much done as juiceme said (and I agree)
Look at what is being exploited now....
wearables...
forcryinoutloud....
wearables to phones are the proverbial death song like "Disco Duck" was to Disco.
("Disco Duck" most definitely put the nail in Discos coffin)