The second is uninteresting because often they can just get your exact product off the same assembly line after hours.
I’ve heard of a third, which is a concern that having the option to load unapproved software somehow compromises the security of everyone else. I don’t buy it.
To do otherwise presents unnecessary risk.
>To do otherwise presents unnecessary risk.
Unnecessary risk to whom? To monopolies that want to control the devices?
I would say the future is requiring open-source flashable firmware to every programmable chip on every piece on industrial or consumer equipment sold.
My vision of the future is farther away than the Signed&Sandboxed, but we should collectively take efforts to minimize damage from the near future of locked down devices controlled by unknown parties.