There might be a bit of a convenience angle since these other competitors are often extremely busy, which can reduce their convenience. If you had one machine w

There might be a bit of a convenience angle since these other competitors are often extremely busy, which can reduce their convenience. If you had one machine where 3 sides could be used simultaneously by different customers, that would improve throughput. You could also have a dedicated side for just plain old coffee (no steamed milk drinks). Because labor costs would be far lower than these competitors, prices could be very competitive and you could offer monthly passes and other loyalty programs. I would consider office buildings where there is no onsite cafe. They would be relatively secure there and you could make them look really high end, for example having visible copper components like those high end Starbucks percolators that some cafes have. This might be important in selling the "quality" benefit over what people can get for free (or cheaper) in their office kitchen upstairs.