I like how you incorporated actually used real design components of existing spaceships. Especially in the cockpit. It looks like something that might actually fly in the future, nice job
In my opinion: if space colonization takes off, it will be because of commerce and entrepreneurship I can imagine a ship like this being one of the most common and important ships in space!
Let's hope so! This design is quite lame in realistic terms though, in reality these cargo ships would probably be absolutely enormous and probably won't resemble anything like conventional ships and would also more than likely be automated... however that's not fun to draw or look at