I don’t understand. It’s already ok to “lock down” devices, from the point of view of most consumers and the courts, regardless of the software license. Phones make it hard for you to flash new firmware onto them. That is still true with android and the open source components in its stack.

Using bsd licensed software in every day life cannot accelerate that because it has already happened, and I don’t see how it would be otherwise, because software licensing doesn’t protect against the kind of locking down you’re talking about.