It's much more likely to be a result of the modern drive for companies to keep growing. This leads to a need to maximize profit endlessly, which in turn leads to cutting corners as much as you think you can get away with, or just ballooning prices. And this problem goes up and down the supply chain, of course - even if you want to run a non-growth business manufacturing quality backpacks, if your suppliers want to run growth businesses, they will eat up your margins and force your hand.

This obsession with ever increasing revenue is a major source of our worse and worse consumer economy.

In theory, competition is what prevents this. If these small companies can sell products that provide more value then consumers buy the alternative.

I think the problem today is that it's extremely difficult to tell when you're buying quality or a brand. If there's a 40$ and a 100$ backpack, often the 100$ version does not actually have meaningfully improved quality - just better marketing.

The same goes for tons of products - brands nowadays are something companies build while they're young and relentlessly smash into the ground as they age because the value you're destroying isn't obvious. Shareholders get good results, and objectively it's probably the correct financial decisions for the company - doesn't make it any less shit.

Absolutely this. I am sure there are recorded cases where companies have gone out of their way to make things break early but I think it’s more times than not simply that cost matters and consumers are the voters and for the majority cheap wins. The average consumer is not very thoughtful and will opt to buy the cheaper good. For sure there are many economic constraints and not everyone has the luxury of buying quality but that’s not always the issues.

This comes up a lot with washing machines and I sympathize with parts of it, why not standardize control boards more or other components in the machine but one of the biggest issues is simply the cost of labor in places like the US is high enough that it’s hard to make it cost effective to repair.

Agreed. You can also say that they are better engineered for most use, nowadays. With the adage that anyone can build a bridge that doesn't fall over, an engineering team is needed to build one that has the minimum resources to stay up.

In particular, how durable do people think backpacks need to be? If you are going through them particularly quickly, maybe you are over loading compared to what they were designed for?

That's the end result of capitalism squeezing all disposable income from the people. Wage suppression, rent-seeking subscriptions, shrinkflation. When people barely have enough money to survive, they can't afford to buy things!