The Suzuki Carry has a bed width of 1585mm (62.4") the Silverado has a max bed width of 64.8" (1646mm) so 60mm/2.5" wider. But the Silverado’s bed isn’t rectangular, ie if you want to lay something flat, the widest it can be is 50" (1270mm). That’s a foot narrower than the Suzuki.
The Silverado has higher walls which imo isn’t really a plus or minus. (More bulk materials, and less need to tie things down, but harder to access the things).
There are a lot of other differences in available configurations. I think the reason a lot of people prefer Silverados boil down to esthetics, and the perceptions of others. I think that for a lot of men, pickup trucks are an expression of their masculinity. They want something big and powerful that they can take into the woods and be manly^tm^ with.
A Carry is very practical and if I owned a landscaping business I think that’s what I’d want my crews to be driving.
But also, I’m not a business owner. I’m a man and I get it. Honestly I’d way rather own that enormous impractical pickup. I’m more likely to be hauling hockey gear than lumber and drywall. I’m tall and girthy, I appreciate a spacious cab. I have child seats in my car.
Maybe men should stop pretending they don’t care a lot about fun.
Edit to add: but I do agree we need society to be less car/truck centric.