My wife and I now refer to this phenomenon as "getting oculused". When you come up with an amazing moonshot project, make a ton of amazing progress, and then, from an apparent outside perspective, completely stop making progress, at which point your competitors start from scratch, surpass you, and get to market first with something that has more features.

Are there other big examples in history of this phenomenon? When a company announces a lot of genuinely pioneering progress at something, and then is immediately beaten to market by a competitor who was paying close attention and moving more nimbly?