This is exactly one of the concerns I mentioned: https://news.ycombinator.com/item?id=5353171. It is already exhibited by other controllers of TLDs: http://ydal.de/a-records-on-top-level-domains/
I havent received a reply yet to my request to reopen the public discussion on the new gTLDs: https://news.ycombinator.com/item?id=5351335. I'll be chasing up on it today - I would appeal to the rest of you to do the same and help stop these gTLDs ever seeing the light of day.