I'm amazed with how much response this guy gets. This is nothing new. My mother used Herbalife protein powder back in the 90's and it was packed with nutrients, minerals and vitamins. It was advertised for weight loss but could also be your nutrition base depending on dosage.
I am sure they weren't the only company to offer something like this, there must be plenty.
I think a large part of its draw on this site is that he's packaged the ideas from the 'hacker' perspective. It's an interesting thought experiment to think of other slightly dated but mainstream activities could do with a similar treatment.
If I remember correctly, someone addressed this pretty early on with an argument that hinged on economics. I'm going from memory, but I think that living off of the prepackaged predecessors would be either unworkable (not comprehensive nutrition) or prohibitively expensive (treated as medical supplies rather than food).
I am sure they weren't the only company to offer something like this, there must be plenty.