First thing on the list for me is dramatically reforming the Digital Millenium Copyright Act (DMCA), which currently makes it a federal felony to provide other people any information or tools they might use to control the devices they own, ex:
> Thanks to DMCA 1201, the creator of an app and a person who wants to use that app on a device that they own cannot transact without Apple's approval. [...] a penalty of a five year prison sentence and a $500,000 fine for a first criminal offense, even if those tools are used to allow rightsholders to share works with their audiences.
https://www.eff.org/deeplinks/2020/09/human-rights-and-tpms-...
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In some ways, I think this is even more important than attempting to bar companies from putting in the anti-consumer digital locks in the first place: It's easier to morally justify, easier to legally formulate, and more likely to politically pass. The average person won't be totally stuck lobbing the government to enforce anti-lock rules for them, consumers can act independently to develop lockpicks.
Plus it removes the corporations' ability to bully people using your tax-dollars and government lawyers.
The DMCA stuff is quite annoying for more reasons but all are US; my hoster and internet provider both have standard emails for DMCA and copyright violations from US companies: "We received this, we do not care if you act on it, cheers.".