They'll be able to have bigger numbers though. If your 900 Watt machine doesn't pick up the mess your 5 year old just made, what's the answer? Empty the material it has sucked up already? Clean the filter like it says in the manual? Hit a "boost" button the cleaner has for that one area? No! The answer is to buy a 1200 Watt machine. Still not helping? Buy the 1500 Watt machine.
Definitely don't read anything that would explain it's just not really practical to turn those extra 300W into more suction, but very easy to turn them into more noise and heat and charge extra for the bigger number.
Consumerism's answer has to be more consumption, bigger numbers mean better, if you authorise consumers to think maybe they don't need bigger numbers, how will you have infinite growth?
I know it's not your point, but on top of everything "more powerful" is misleading.
- Typically this means more power consumption, not suction power
- Most modern vaccums improve with cleverer working designs to be better, not by just chucking more power into it
- The majority of houses in the UK have carpet, which makes this kind of vaccums silly, as anyone with a carpet and 2kW vaccum can tell
But seriously, I would use a medium-powered vaccum for loose debris on carpet. High suction in thin carpets can actually damaged them and for shaggy carpets it all depends on the design IMO (carpet mode), not the suction power. In fact high powered ones might be too close to the base and not suck the debris effectively.
I don't think using a reverse wind tunnel does any good to carpets, honestly.
Let's not pretend appliance power limits are a good thing, I'd rather pay double or triple if it gets the actual job done first time than run something cheaper 2-4 times.