The only real problem here is hub motors are not produced on an industrial level that allows for more research and developement or lower cost. 98% of them are from china as well. Geared hubs are all total trash and last less then 200 miles on average before they spider out. Non geared hubs are generaly heavier but they do distribute the pounds well as they are in the center of the bikes gravity. Standard chain drive kits are messy and offer more chances for bodily harm. They require alot more upkeep as well. I dont think if this industry ever takes off you will see a large amount of chain drive kits. It will be no upkeep gearless hubs. They are zero noise and zero injury risk.