Certain cards are very popular with certain demographics.
I would not do something as stupid using cards to discriminate pricing.
Now of course, we live in a society where the courts would never actually make that link, so you can argue I'd be a bad leader leaving money on the table like that...
But I'd say that's more a problem with our system than anything.
I'm pretty sure it is more than that. I mentioned in a comment below this one that they probably use my destinations as a proxy to asses my income and how much I'm willing to pay for a ride
I would not do something as stupid using cards to discriminate pricing.
Now of course, we live in a society where the courts would never actually make that link, so you can argue I'd be a bad leader leaving money on the table like that...
But I'd say that's more a problem with our system than anything.