Well, I don't know about you, but I like food. And I like having some variety to my diet. If you like this concept then have fun with it, but I can't imagine it catching on in a society changing way like what you're describing.
i think it will become successful after some initial shock, drink shops offering this stuff will probably be a popular choice at first (many might prefer trying it this route), fast food places might try to cash in, some spin-off* might be created soon as well, eventually they might be available in bags from retail stores
*there is actually a custom-blend community within the soylent website that posts their ingredients/nutritient profile/daily price. you can even order all the ingredients in 1 click with amazon, some offer vegan/bulking/dieting blends but most i've seen are just cheaper soylent alternatives. it is interesting that these cheaper DIY soylent blends are being sold from the soylent website without soylent even earning anything
also received an email update, they start shipping in around 1 month. i read the blog, a huge amount of comments are about the latest blends inclusion of sucralose and vanillin, it says the amount added is to mask the vitamin mix without affecting flavor
many are enraged that it no longer strictly contains nutrients because of these additives, i don't understand why anyone would want to go through the trouble of adding flavor and masking the vitamin mix for every single serving
so much drama