hard floors, and cylinder vs. upright versatility
Even in California, or Florida near sandy beaches and homes with more ceramic and marble floors have always had a larger market for canister types.
Uprights were touted more as carpet "sweepers" because the old designs with the open fans with a belt pulley in the suction path of all the dirt had little suction power for above the floor cleaning.
The brush rolls also did not shut off, so a no no on hard flooring.
Since the sealed design style emerged, even before sealed hepa types, where a hose connected the floor nozzle to the bag chamber, and enclosed squirrel cage design fans, such ah Hoovers Dial-a-matic had as far back as the 1960's the suction issue on a hose had been resolved.
Panasonic was the next to copy.