Software is not different from hardware. Digital parts aren't magic, bring no magic rights, it's still just boring old parts someone invested in engineering into a product.
Even in digital, beige box server, IaaS, PaaS, SaaS, FaaS, applications, devices, apps, screens... different waterlines, none of them magic. Which waterline do you have the right to "run whatever you want"? Which waterline is a business ok to say, from here down, it's my product?
Anti-circumvention laws saying DRM means hands off altogether are different from saying a maker must take extra steps to make it easier for you to mod the device they invested R&D in, must allow your mod at potential harm to other mods on the device, or a maker must change their business model to facilitate malware and benevolent app devs alike.
There's a market segment for beige boxes and Raspberry PIs. Not every device with digital parts supporting digital mods, plug-ins, add-ons, cartridges, apps, whatever you call them, has to be forced to be a Raspberry Pi.
You have a right to remove the warning label from your mattress, or root your phone, but Sealy doesn't have to perforate the tag and Samsung doesn't have to give you a toggle.