

Not the kind of problem that can be solved by individual consumer preference choices.
I’m not sure you’re right about that. People might choose more private solutions if they were as easy to use. There’s other disadvantages too like proprietary IOT devices accumulating a reputation for spontaneously becoming ewaste. It might not be a total solution but I think the level of accessibility of self managed (or at least end to end encrypted) security cameras matters and is everyone’s problem.
Realistically it would probably have to be externally networked to have a comparable level of convenience, but that could be done with encrypted open protocols and software.
The former is not irrelevant to the latter. The whole reason encryption itself hasn’t been widely banned by now is its deep integration in a wide range of technology and its relevance to business. Whether people actually use a technology is directly relevant; they can call something criminal and ban it, but that costs political capital proportionally to the required disruption and how many people are affected. You don’t need a “total solution” to increase that cost for them, such a one and done measure is probably impossible anyway. Do you even have an idea there, or do you think it’s just hopeless and everyone might as well give up?
A central problem is that people are using these products, and the best available solution absolutely involves paying attention to why they use them and what weaknesses they have. Check out spaces such as r/homeautomation, people mostly don’t care about privacy but that doesn’t mean there isn’t any room to displace these things, they suck in a lot of ways some of which are inherent to proprietary services.
fwiw my own camera is a waterproof usb one fed through the wall and plugged into a raspberry pi. I’m sure it can be made easier for people than that.