Maybe in 2017. Nowadays how could they control asics they already sold?
It would take them years and years of manufacturing and losing money until they would have enough hash power to make an impact.
Discussion
Unless a government had been stockpiling ones not made available to the public all these years...with an unlimited money printer, and only a couple manufacturers to bribe. How would we know?
I consider it unlikely too...but still well within the realm of possiblility.