And/or a craven attempt by employers to further deflect any responsibility for responsibility for paying their employees. I noticed that the Curb app bumped the default tip rate to 25% at some point. I'm guessing that's somehow, directly or indirectly, leading to them or taxi companies getting to keep a larger cut of the fares.
A more interesting and useful comparison would be to poll individuals who have held similar service industry jobs in countries that do and do not have tipping cultures, and ask them which they preferred and why.