you know the chinese guy who designed the Sha 256 ASIC chip for Labcoin ( A company which failed and then turned out to be a scam) took a reference design and completed his own chip design in 8 weeks.
its not hard to get a working prototype ASIC if you hire people with the right chip design skills.
the more difficult part is tuning the chip and getting good die yields so it can be mass produced cheaply.
maybe its hard for you.... but not difficult for someone who has money and knows how to get a highly skilled design team together...
people who assume that there aren't teams already working on ASICs trying to preempt the market are just living under a rock.
X11 ASICs will be next after Scrypt and Scrypt-N... and guess what's in X11....