Almost all we eat has been genetically modified (by man). Just think about plain old wheat, and compare it to the wild grasses from which it was changed some 5000 years ago in the Golden Crescent of the Middle East. You’d never even dream they were related. The same for rice, soy, oats, corn, and all the rest of the grains we eat. Or if you consider a milk cow, and compare it to the wild animal it was derived from. Or a beef cow. Or a tomato, or a carrot, or an apple. None of them has the same genes now as the animals or plants they came from. And if they did, we probably wouldn’t be very interested in eating them.
I’m not sure what this proves, except that it’s pretty clear that we eat genetically modified food all the time. Some people will still demand that all “genetically modified food” be labeled. But it’s not clear to me where you would draw the line. And wouldn’t any line you draw be artificial?
As for Solazyme, they seem to have so many high-margin non-food products possible that I doubt that it will make much of a difference for them, as a company.