Because people would still be willing to pay more once they know what it is they are getting.
Okay, say I want to buy a device for mining, and I want it to remain profitable for at least a year. That means I am looking for a device with the following features:
Sure, Avalon
could have some extra awesome feature, but unless that feature increases mining (maybe it sees the future so it knows which nonce it will be without hashing?) or reduced power (maybe it includes 16 100W solar panels to keep the unit online for free?) then the unit is not going to be superior than a boring competing unit which does the same mining for 1/4 of the power.