[fastball]

Why not? It is useful for the company, ICANN gets a bunch of money, and it is not hurting anyone else (in fact it arguably benefits everyone else by causing big players to be more likely to stick things under their TLDs rather than monopolizing more .coms and other public TLDs).

[thfuran]

If the big players decide to move their stuff to their own tld, they'll probably keep their old domains to redirect them.

[fastball]

For sure, but (very) maybe they won't buy as many new ones, e.g. when they release new products.