You can control your computer's software but not Alexa's. The internet doesn't record your home via microphones and submit to FBI:
https://techcrunch.com/2018/11/14/amazon-echo-recordings-jud...
https://techcrunch.com/2018/11/14/amazon-echo-recordings-jud...
They complied with a legal order - they didn't submit it to the FBI.
Do you need some more tinfoil for your hat?
Frankly I'm baffled at how you could be as confused as you claim to be.