Companies DO analyze what you say to smart speakers, but only after you have said “ok google, siri, alexa, etc.” (or if they mistake something like “ok to go” as “ok google”). I am not aware of a single reputable source claiming smart speakers are always listening.
The reality is that analyzing a constant stream of audio is way less efficient and accurate than simply profiling users based on information such as internet usage, purchase history, political leanings, etc. If you’re interested in online privacy device fingerprinting is a fascinating topic to start understanding how companies can determine exactly who you are based solely on information about your device. Then they use web tracking to determine what your interests are, who you associate with, how you spend your time, what your beliefs are, how you can be influenced, etc.
Your smart speaker isn’t constantly listening because it doesn’t need to. There are far easier ways to build a more accurate profile on you.
It is misleading to attribute too much credit to a single individual, even a president. There was a significant clash of social/political forces when Obama was in office. Off the top of my head I can think of the following major forces: War in Iraq & Afghanistan, Great Recession & Occupy, DREAMers, ACA, Gay marriage, Environmentalism / Inconvenient Truth, Global outsourcing & job loss, Tea Party & the rise of militant christian nationalism. That’s the landscape in which progressive policy ambitions were compromised to death to avoid total gridlock.
It’s also worth giving credit where it is due: those auto safety and emissions regulations achieved their goal… for regular cars. Unfortunately, Republicans insisted on exceptions for body-on-frame vehicles (trucks, vans, SUVs). In the years since, those types of vehicles have steadily become the most common in the US, because they are the most profitable for the auto industry.