I admire what you are trying to do, but the whole notion of “food substitute” bothers me and makes me skeptical (even though there are only a handful of things in the world I’m skeptical about). The “divide and conquer” concept of formulating your product doesn’t seem to suffice for the significance of the place food takes in the human life. Consuming food is much more than mechanistically acquiring a combination of chemical compounds. Mathematically speaking, I’d say that your solution seems to account for only 5-10% of the whole food experience, and specifically I fail to see how much it impacts the health component of it. The human organism is a complex, internal holistic system immersed in and interacting with a complex external environment and all of this complexity cannot be substituted by a just a number of chemicals put together in a tube (speaking in terms of food intake). For example, equally important to what you eat is how you eat. One of the biggest misconceptions in the modern (western) world is that physico-chemical components isolated from their origins when put together do exactly what they are supposed to do in terms of combining themselves into meaningful, working “machines”. This is a hypothesis, not a proven fact. Scientifically, for example, the protein folding problem would have not existed had this been so trivial. Obviously, there is much more in the game than just mixing some (presumably) relevant discrete components.
Consuming food is also a ritual, which is widely ignored in western countries. Hence, the consequence - >17.8% of the GDP goes to health care in the US. The sole fact that your company exists proves that the lack of proper food behavior leads to (fast) solutions to an artificial problem, which solutions, as stated by you, may not be beneficial in the long run. The problem in fact is not that we don’t have time to cook or time to find nutritional food - it is that we don’t have time at all. And the solution should not be a “food hack”, as yours seems to be, but rather a deep foundational level change to ensure that the most important thing for humans - i.e. their health and well-being - is guaranteed.
I would call it a temporary food substitute in “emergency” situations, where emergency could be anything from a real catastrophe to all-nighter in the office. However, calling it a “substitute for food” in general that could be consumed over months is premature, unproven and highly questionable for the long term health benefits of the individual. The holistic concept is simply missing in your formulation, and regardless of whether you believe it or not, it is the one that formulates everybody’s life.