We wouldn't know, since most of the incidents would never see the light. From the incidents that did come to light (e.g. Google spying on you through its assistant), we do know that they can and will bend the letter of the law to suit their purpose. So I think that it's your opinion that sounds hopelessly naive rather than OP's.
Most of the cases of Google "spying through home assistant" (along with the other assistants, Amazon, Apple included) while obviously invasions of privacy were generally (all?) legal.
At least in the US they weren't breaking any laws. I'm not saying they would never break any laws for financial gain, just that most of the breaches in privacy aren't technically illegal (thus the need for privacy laws)
