I'd love to be wrong but I don't think this format will ever find a market.
There doesn't seem to be any tangible benefits over an electric cargo bike.
Once you exceed a 250kg system weight your pedal power input isn't worth the extra weight of the drive train et cetera - you're better off with more battery so obviously you're just an electric car at that point.
The faring (and the extra width) creates a lot of wind resistance which, over a moderate distance really adds up and becomes a significant factor. You also need to wonder how many occasions this faring would make the vehicle usable when a rain coat wouldn't. For example, if weather is a spectrum between 1 (calm & sunny) and 10 (cyclonic), then 1-5 you don't need the faring and 8-10 it's probably not safe to drive and 6 is just rain-coat weather.
The only benefit I can really see is that it's more approachable for people that just don't do bikes. For example, my cargo bike has a seat on the back that my kids love to ride on but my partner just won't. It's not because it's uncomfortable but because she finds it embarrassing. I respect her feelings on the matter, and I think she would feel better about something like this.