Godammn vacuum cleaner broke. Took it apart, its just a part of the brush roller that is broken. Should be an easy fix. But they don't sell spare parts for my vacuum. They never have, they just want you to buy a new one. So one little easily replaced plastic bit makes the whole thing into non-functional mostly plastic waste. The vacuum is even clearly designed to be easily repaired, it's one of the most intelligently laid out appliances I've ever seen.
But it's not profitable to sell spare parts, so I have to send this thing to a landfill if I can't figure out some ghetto fix. This intentional wastefulness is one of the things that pisses me off about capitalism nearly every day.
If you want to buy something that can be repaired, you have to factor that into the price of the thing your buying. Commercial vacuums can be repaired.
From an engineering perspective, the difference is that that for commercial products, the end producer is likely just assembling a product made from other companies designed specialty parts, whereas for cheaper products, they just manufacture the entire thing as a part of a single process in one factory. The only parts not made in house are probably the air pump and electrical board.
You used to be able to buy those in-house parts a lot of the time though. Consumer manufacturers realized that this means less new sales though.