Interesting comments, I hadn't thought about this from a vacuum store perspective. Doesn't surprise me though, as people buying vacuums in a specialty store often aren't looking for the same product as someone shopping in a store like Walmart.
What you mention is interesting. My grandmother always used a broom until she got her first canister, a GE swivel top in the 1960s. Then she got a Rainbow in the 1980s, which she used fairly regularly and used both the PN and attachments. I guess she got tired of having to set it up as she got a Bissell bagless upright a couple of years ago. In the past year she had the carpeting replaced with wood laminate throughout and I don't know if she still uses the vacuums or not. In the interim she had a couple of stick vacuums to sweep the kitchen after dinner, and she had bought a vintage Eureka F&G so she could have something to do a quick pick up on her carpet, but I don't think she ever used it and she sold it shortly after. They also have a Craftsman carry around shop vac for car cleaning and at one time had a 70s Montgomery Ward shop vac, but I think it was tossed as the hose and dolly broke.
My other grandmother's first vacuum was an avocado Singer Silver Glide in the early 70s. She used it until she had a new house built in 1981 with carpet. For that she bought a Hoover Concept One Self Propelled for the carpet. The PowerDrive went out when she was getting ready to sell the house, so she had the vacuum shop disable it and bought a Hoover Elite Supreme after she moved. The Concept One went to my mom who used it awhile and then sold it. The Singer had to have the switch bypassed at some point. She kept it, but it stayed in the coat closet after. I helped her clean the car once and she was deciding whether to use the Singer of Hoover and she decided to use the tools on the Hoover so she could switch it off if need be.
Back on topic, I assumed people weren't really using the attachments, because of how minimal they have gotten. The combo tools and 3 in 1 tools are getting common even on canisters. Although I looked closely at a Dyson canister recently and was impressed that it had 3 separate attachments, though small. The dusting brush was fairly soft and upholstery tool even had felt. Kenmore attachments are starting to get better, the new Intuition has a dusting brush much like the older machines, not a combo tool or the horseshoe style tool, but a usable horsehair oval brush.