Wait, you added that part just now.
I don't see why you couldn't drive a taxi for a living (though I don't know if that is all that was meant by "career"), but taking for granted that you will be paid well seems off.
It's the primary reason we don't need a minimum wage - working in the service industry or any other relatively unskilled work isn't "a career" so it doesn't matter if it only pays 2 bucks an hour, so goes the reasoning because nobody should be expecting to do it for long or make a life out of it.
It's myopic.
Why the f*ck should teachers not be paid enough to support themselves and have a life? Wow.
No, I'm still confused. What is the problem with being an elevator operator for life and expecting a good wage?