Re: I don't understand
"many require that you not record a call without BOTH people knowing that the call is being recorded."
There is always the don't ask/don't tell thing. If you are on a call and can't take notes, transcribing the information later from a recording can be very useful. If you didn't tell the other person the call was being recorded, it wouldn't be admissible in court, but your notes would be.
Google finds it extremely useful to be able to capture all the data it can for its files on everybody. While they might be prohibited from monitoring live calls, machine scanning recorded calls could be something they can get away with. The recording itself might not be used, but the information discussed might be. If you record a call and tell somebody your mother just passed away, Google probably knows who you mother is, her tax ID number, address, phone number, etc. Credit card companies and banks would love to have that information right away to lock those accounts down. If you tell a family member than you've been diagnosed with a terminal disease or been sacked from your job, those same credit cards companies, banks and credit agencies would love to know.
You know that when you get a recording that your call may be monitored for quality purposes, that recording will not be available if it would help you in a dispute with that company. Your call was one of the many that weren't monitored in those cases. Since companies aren't required to have a non-recorded customer service phone line(s), why shouldn't customers be able to do the same with software they choose?