Laws against theft, contract enforcement, etc. are general laws for the benefit of everyone. (They also derive from common law, which dates back over a thousand years, as opposed to statutory laws that are routinely bought by lobbying, but let's put that aside.) They are a sort of 'legal primitive' - don't cheat, don't steal - that attempt to provide a baseline of trust in society.
Mandates that computers must respect special rules based on legal definitions are laws that tell me how my machines must operate and how you must build machines. They are arbitrary restrictions the degrade capabilities (make the machines less valuable) solely for the purpose of enabling a few industries to be lazy and not figure out how to be relevant in a changing world.
If you want to go down that path, you're going to be "picking winners and losers" - something I hear we are supposed to dislike. Which business models "deserve" protections?
- Do long-haul truckers "deserve" to keep working in the face of self-driving trucks?
- Do corner groceries "deserve" protection from Whole Foods/Amazon or Walmart's logistics innovations?
> So what makes some business models [...] more protectable?
As a descriptive matter, it appears that that's closely related to one's investment in lobbying.