She isn't telling you to buy it brand new from retail. That's the absolute worst way to buy products. Buy it again means turn cash into utility, and if you buy used and sell once you are done with that utility, you can end up at zero net loss.

I moved into an apartment where I had to cut my own grass. I bought a mower for $50 and cut grass all summer. The next spring, I moved to a different apartment without a lawn and sold that mower for $50. If I ever need to cut grass again, I'll be back in the $50 mower market.

Net cost is zero to me and I have only just enough utility as I ever need, which is exactly what kondo envisions. No rabid corporate machine has been fed with my transient lawn care needs, just more circulation around the hyperlocal economy that is removed from globalism.

What she knows is that you often don't need it later.