Klarna and affirm are the next gen of bullshit companies. Like Uber and WeWork before it. Absolutely massive scams fed with easy money and dumping on the next fool.
Actually, don't answer that question because I live close-ish to IAD and... it's a whole thing. But Dulles is located in a car-dependent asphalt wasteland so I think my point still holds. DCA is actually sane about this and is right off a major subway line (Blue).
North America is really a unique beast in this regard, though, as nowhere else is it common to intentionally make airports so difficult to get to and from. Even in Europe, certainly for remote airports you might not expect lots of train connections, but IAD and SFO don't fit that bill.
I guess you can say that Uber's value prop is that they smooth over the failures of American urban planning in exchange for their cut of flesh.
IIRC I would have had to log into my bank account through them, giving them my login data and letting them read all of my transactions (data they use to gauge trustworthiness, I think). I was shocked that that's legal and amused to find out it probably isn't.
(Disclaimer: Highly anecdotal, it was multiple years ago)
Uber got where it did by losing vc money and by ignoring laws. That fits my personal definition of bullshit company.
If it is raining or the sun is out or the trains are busy or it is any of one a hundred random reasons - you will have surge pricing. Not just 10-15% extra but 100-150% extra. But don't worry keep standing around for a 30-40 minutes and checking the app eventually the price will come down...