There could be perhaps a SMALL argument made that by setting expectations (both about kit accuracy and delivery timetable), AMK *has* harmed their potential customers from a business/marketing standpoint.
AMK has boasted proudly that their kit would be the single most accurate Tomcat kit ever. Tomcat enthusiasts would obviously clamor for such an item, and it shouldn't come as any surprise when the fanbase takes the company to task when their product (prototype shots though they may be) doesn't deliver. That was a claim that Sio and company made in good faith, riding the waves of enthusiasm from those who (somehow) didn't feel their Tomcat modeling needs were being met. They made this claim and were unable to back it up. That was mistake #1.
Secondly, the goalpost that was the release date was a line drawn in the sand and then moved back more than some prior presidential administrations. Once or even twice could be construed as an unforseen mistake. *everyone* is subject to the unknowns, after all... but it seemed to happen a lot, with deadline after deadline passing with no plastic in hand to show for it. That was mistake #2.
Thirdly, on top of all that, besides some prototype shots that never really seemed to change or improve, the only feedback that we ever got was "It's coming soon guys, we promise!" with a lot of dodging and ducking of questions from potential customers. EMCON and a lack of transparency don't do AMK any favors. It shakes the faith of the potential customer base and leaves them wondering if AMK can deliver on any of their promises at all.
Does AMK owe anyone any transparency or explanations for their silence or delay? No. No money has changed hands yet (that I know of), but when you make the claim that you're gonna release the best tomcat kit ever, and make initial attempts to engage the customer base with 3D models and continual progress with the prototype shots, when you suddenly go silent because you've hit snags it puts a bad taste in everyone's mouth. Most customers would much rather hear "Hey, we've read your feedback and have taken some things back to the drawing board. We want it to be right, so we're correcting it." than a company that ignores the outcry or worse still, hems and haws about it without really saying what's going on.
so, I DO think there has been some harm. AMK's credibility has been shot down like a BF-109 over London, and a lot of people (even if they haven't paid money) made an emotional investiture to be excited about something... only to get hoofed right in the tackle for doing so. As a matter of principle, people SHOULD make their displeasure at these tactics known. We should discourage poor business practices in social media interactions and ultimately vote with our wallets when the product (finally) lands.