it's like 'used' book sales.
publishers of 'books' would prefer you buy them new so that they can collect the actual profits.
they don't really earn more than 10$ per year on the sale of 'Exclusive.com' given that someone probably registered it in the 90's for 10$ and they're selling it in a private sale for thousands or millions of dollars.
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Obviously this is not amazing, if it was 'first come first serve' domain squatters would do the same thing anyways.
It's not really like the 90's any more, once 'domain squatting' was invented, it doesn't really matter if you make new TLD's, there squatting will still exist on the shortest/simplest names.