Capitalism is primarily defined by the need to push for constant growth. There's nothing wrong with buying and selling things, but making growth a matter of primacy automatically means the quality of the product and user experience isn't. Neither is the well-being and livelihood of the workers.

In a system where companies are incentivized to compete on that level, we can't have nice things. Not for long anyway.

It's definitely capitalism, rather than just commerce, that's the problem. It's a social cancer.