https://www.bloomberg.com/news/articles/2018-04-03/crypto-exchanges-charge-millions-to-list-tokens-autonomous-saysThis is of course a no shit Sherlock type of headline, but what I didn't know is that they're charging ongoing annual fees too. Surely the trading fees would've been enough. And I can't see any scenario where they'd remove a successful coin because they weren't being bribed, but maybe it's possible.
The only alt I'm proper familiar with is NEM which has always refused to pay exchanges to list. They've paid for that in lack of volume on occasion too.
I wonder what the landscape would look like if this wasn't a thing.