I don't think it's a blatent deliberate scam, more a case of unfortunate delays making the market lose confidence.
That's simply not the case. If you search these very forums you will find that the COO of BFL(BFL_Josh/Inaba) among others at BFL have been
misleading lying to investors about shipping dates and power consumption estimates for months. Continuously leading investors to believe that BFL could ship any day and verbally attacking anyone that questioned their perfect 1w/Gh "estimates". This has been going on since at least September of 2012. The evidence is all over this forum, you've only to seek it.
...and ASICMiner shares are available in abundance.
https://btct.co/security/ASICMINER-PT