It seems probable.
"Reputable" companies already don't mind overreaching with this for their voice recognition, often sending off recordings of you even when they weren't actually locally recognized as a command so they can analyze it for their own gain like improving speech recognition: https://money.cnn.com/2015/02/09/technology/security/samsung-smart-tv-privacy/index.html https://www.theguardian.com/technology/2019/jul/26/apple-contractors-regularly-hear-confidential-details-on-siri-recordings
David Goldman (CNN): Your Samsung TV is eavesdropping on your private conversations
The Guardian: Apple contractors 'regularly hear confidential details' on Siri recordings
Doesn't seem like much of a stretch that less caring actors would eventually go further and analyze it for advertising. Might be illegal in many places, but will that stop more shady agencies situated somewhere in other countries? Fake support calls supposedly from Microsoft are also illegal, yet a giant business model. As is e-mail spam.