How exactly do you think this works? With DNS, there's a trusted third party who can help recover from errors — if you lose access, you might have to prove your identity but it's not a hard process. If someone squats your domain or steals it when they compromise your computer, the registrar can sort it out or will respond to a court order.
With ENS, the answer is you're screwed if you lose the key or whoever has it currently isn't responsive. Maybe you can track them down and get a legal action strong enough that they honor it but that's a lot more work and has a lot more failure modes which look like the apple.eth service having to move to apple computers.eth because the system is designed to fail hard. Very few people are going to want to build on something like that because it means that even a trillion-dollar corporation is one phish away from a massive disaster.