Those whose opinion actually matter have done the math and put orders in to save them cost in the long run.
Of course, if right now, the load capacity or the range isn't applicable to one's business requirements, then Tesla Semi doesn't make sense. However, cost is often the biggest driver in any business. If a business can change things around to fit within the current constraints of the Semi, then they can do a cost-benefit analysis and Tesla Semi may then make economical sense.