The reason it’s not that easy is that platform holders have contractual obligations with content providers about their content being secure. These obligations are an incentive to content production.
Making it the law is about the only thing that would work because incentives are otherwise inherently misaligned.
> I believe we need new laws declaring that consumers can run whatever versions of software they want on devices they OWN.
To which you said
> The reason it’s not that easy is that platform holders have contractual obligations with content providers about their content being secure.
I pointed ought that if the law were modified as requested that such contractual obligations would be mooted because they cannot be obligated to implement restrictions that would fall afoul of the prospective law that commenter proposed and I agree ought to be implemented.