It's a much bigger problem when a company with >50% market share connects all the cameras to law enforcement than if a company with 0.5% market share does that, but the first one can't happen if there are no companies with a double digit market share.
And when there are more companies it's easier to tell people to buy a different one because that one is doing something shady. When Amazon does it, you recommend that unsophisticated people do what, use a Chinese camera which is presumably shunting the feeds to that government?
I recommend that people don't install networked cameras unless they build a dedicated air-gapped network for them. If you want to know who is at your door ... look out a window.
Unpopular take, I know, because it demands that people actually understand the technology they're using and where their data flows, and almost nobody has the skill, time, attention, money, and mindspace for that... but that's the only way to be a responsible networked camera user.
And when there are more companies it's easier to tell people to buy a different one because that one is doing something shady. When Amazon does it, you recommend that unsophisticated people do what, use a Chinese camera which is presumably shunting the feeds to that government?