If you follow the laptop/smart-phone repair community [1], the problems they run into is lack of access to technical manuals, diagnostic tools and in cases, being prevented from buying replacement parts by suppliers under the direction of Apple (for example). To me, it seems that this is where government or industry regulation would be helpful and provide most value with minimal impact on innovation and market disruption.
On the other hand, I am uneasy with regulators mandating specific designs (e.g. all phones must have replaceable batteries), or specific standards (e.g. all phones need to use USB-C) or doing things like forcing Apple to include a charge cable or headphones with their devices.
[1] I'm thinking of Jessa Jones and Louis Rossmann specifically.