Ethical Debate: Is It Unfair to Sell Custom PCs With Planned Obsolescence Features?

I've been thinking a lot about custom PC builds lately, specifically the ethics involved. We all know manufacturers optimize for profit, but where does that cross the line? Is it unethical to deliberately design custom PCs, or specifically select components, with planned obsolescence in mind, even if the customer isn't explicitly told? For example, pairing a high-end CPU with a marginally sufficient cooler that will likely thermally throttle the system within a few years, shortening its lifespan.

On one hand, the customer is getting a functioning PC, and they are free to upgrade later. The PC builder also has a right to run their business as they see fit. However, it feels a little shady to intentionally build in a weakness that guarantees future repairs or upgrades, especially when the customer might be under the impression they're getting a system built to last. It’s basically a less obvious form of the practices some larger companies have been criticized for, but applied to enthusiast builds.

What are your thoughts? Is there a level of obligation that PC builders have to inform customers about the longevity of their components and the potential for future issues caused by specific part pairings? Or is it strictly caveat emptor?