You make a good point. And they do have the industrial knowledge / experience to create higher quality parts than Framework. But note that the value difference between Framework's offering and the others you cited is that repairability is today a lower priority for them (due to prioritising planned obsolescence), where as it is the core value around which the Framework business is built. Why aren't we seeing more modular laptops and smartphones? Sure, people cite technological advances and how electronics are manufactured today. But a major reason, in my opinion, is that it isn't seen as profitable as designing and selling devices that are not easy to repair or upgrade.
Each new Fairphone has pushed the boundaries of what a modular and repairable phone can be, but people must accept that it comes with a very significantly higher price (although in their case that's not only because it's modular, but also fairer wages, more ethical metals, etc). The average person is not willing to pay twice as much for a repairable phone.