"Bitmain didnt even get to announce the miners until after Monero announced their hardfork, and still it seems that they sold enough obsolete hardware to customers to make back their costs and turn a hearty profit.seems that they sold enough obsolete hardware to customers to make back their costs and turn a hearty profit."
Seems to me they were secretly mining their own ASICs then when the hardfork announcement came out they put them on the market, then removed their miners from the market and said they were "sold out" so there would be no backlash from ignorant buyers