Sony offered Marvel 5 billion for Spider Man. Is it worth it? Probs not. But now Marvel would stop wasting time sending offers. It's the piss off price.
The domain owner is getting tons of offers for their domain and its a waste of their time. Now, slap $10 million, make it large and visible. So everyone can just go away. It's strategically better to put some high value to filter out everyone.
$5B for ownership of Spider-Man, including worldwide exclusive perpetual rights to the character itself, all derivative works, all the media (comic books, movies, TV shows, etc.) could well be worth the price. I'm not an accountant or IP valuation expert, but there's a lot of money in that brand. Far more than a mere domain name, at least.
The domain owner is getting tons of offers for their domain and its a waste of their time. Now, slap $10 million, make it large and visible. So everyone can just go away. It's strategically better to put some high value to filter out everyone.