Dinosaurs, sadly...
In addition to the significant name recognition handicap and grossly outdated sales model, Aerus has the same problem as Kirby in that their machines are so ridiculously reliable that they end up having to compete with their own used equipment.
Sure, it would be nice to have a brand new Aerus machine but there's no way I'd shell out that kind cash for one when nice, used ones can be had for next to nothing. As of yesterday, I own ten Electrolux vacuums—six canisters and four uprights (excessive, I know. I've got a problem). The newest one, acquired yesterday for a whole $3, is about 20 years old while the oldest two have passed the half-century mark. All of them will be running great well into the future and will doubtless outlast me.
The crazy thing is I have less than a tenth the cost of one new Aerus tied up in all ten of my vintage Electroluxes, combined. Three were trash finds that cost me nothing, four of them cost me $10 or less apiece, and the remainder were in the $20-$25 range. Those that needed work were made whole for little or nothing.
Sadly, Aerus is a 'dinosaur' brand. The meteor has struck, they have failed to adapt and the die-off has begun. The rats are taking over and the revolution will not be televised.