Or they might not even be friends. Walk down a street filled with Ring doorbells. You are being surveilled by strangers who have been fear mongered because a pedophile will steal their Amazon delivery.
A small Austrian retail shop got a $4k fine from GDPR because their surveillance camera pointed too broadly at a sidewalk. It'd be funny seeing regulators try to apply such restrictions on consumers.
I didn't realise visiting a friends house made me a stakeholder in all of their technology choices.