It's entirely within the rights of a company to lock down their hardware if that's how they sell it to you, but it should be equally within the rights of the hardware owner to bypass those "protections". If Honda decides to lock ignition behind an arbitrary clearance check (pulling a John Deere), they shouldn't be able to retaliate if that lock gets bypassed -- as long as that distinction exists, we will always be proper owners of the things that we buy.
If we were to upgrade the saying "possession is 99% of ownership" to the digital ream, it would be something like "control is 99% of ownership." The distinction between possession and control is only relevant for smart devices.
They may be mandated to do so:
> U.S. Senate bill seeks to require anti-drunk driving vehicle tech
* https://www.reuters.com/world/us/us-senate-bill-seeks-requir...
See also BMW and microtransactions:
* https://www.theverge.com/2020/7/2/21311332/bmw-in-car-purcha...
If there is such software is inside your civic then no, you don't own it. Honda does. The word "ownership" is in part defined by the ability to exert control. If Honda controls who drives the car, where, how and when, the owner is indisputable Honda.