There is perhaps a bigger picture "tragedy of the commons" scenario where external regulation is needed - absent intervention around repair, companies are likely to keep churning out short lifespan electronics, creating an eWaste problem down the line. That's an externalised cost that the producers of the eWaste are unlikely to bear.
If the supply of rare earth metals and other components needed to produce products is constrained or politically at risk, it makes sense for strategic intervention to try to ensure better longevity of products, to improve resilience. That's a government level risk in some ways, as countries are now highly dependent on technology.
Disruption to chip supply chains is already having an impact. If the financial incentives are to drive selling more chips to replace existing devices whose lifespan could be extended by repair, it's possible we reach a "local optima" free market solution that limits device lifespans, where a global optimum point exists with long lifespan devices that are easily repaired, and gives better "big scale" outcomes, but which might not yield the same cosy 24 month re-purchase cycles for mobile handsets etc.
On the other hand, consumers don't have the option right now to buy a repairable device, so they can't easily vote with their wallets and signal their demand for this. In an era of chip shortages, as a government I would want to ensure I was gearing up policy-wise for a period of reduced availability of supplies, prioritising the key demand that is nationally significant, rather than letting the free market determine they can make more profit from selling another range of new mobile phones at inflated high margins, since the last generation of handsets had an artificially suppressed lifespan.