£150 for Oasis next summer might well be the most I've paid for a gig (but spent a lot travelling to see some bands).
£275-ish (?) for Glastonbury 2022.
Can't think of an expensive football match. Certainly not £100+ anyway. Oh, maybe athletics at London 2012.
Still, if they can cap fees for the resale of Oasis tickets, they can do it for all.
(Obviously) No excuse for £100+ per ticket admin fees. That's actually more than Ticketmaster!
Social media?
The link is to (widespread) news stories on the Internet.
Mail, Independent, Guardian, Fox News, New York Post, New Scientist, Mirror... and 100s of others!
Does a story have to reach newspapers to be considered 'news' in your world? Are you my dad?!
Yes, that's exactly what happens, I think.
Once the (intentionally restricted) standard tickets are sold, Platinum (or "in-demand") tickets are offered to take advantage of desperate fans.
It's pre-calculated.
(Another reason not to call it 'dynamic pricing' - the other being that prices...