Useful lay out of possibilities, Psyayeayeduck. And welcome to posting on FT!
I usually wonder about this issue, but at car rental counters. But, I do have to add that re the BART tickets (and other mass transit ticket kiosks), they can be tricky poorly-designed for the uninitiated. I spent about 20 mins once at NRT trying to figure out how to buy train tickets. I'm sure I pissed off hoards of efficient travelers. :/