I think the idea of pictures as URLs is impossible. There are several reasons for this:
- Technical reasons: The entire DNS system needs to be changed; what about email?
- Practical reasons: Mentioning a URL on TV, in ads, on cars or whereever would be impossible as you can't copy / paste from there. And how would you even aquire the logo of IBM without visiting ibm.com or a related site first? Potential chicken and egg problem here.
A (no, the) way to make a resource worthless is to up it's supply to infinity or bring down the demand to zero. Because of their unique nature right now domains are scarce resources, that's why they have a decent value.
I see the possibility of a switch to a more sophisticated DNS system, a system where domains lose their uniqueness. In such a system everybody could have the domain name he wants and different people could share the same domain name somehow thereby eliminating the scarcity of domain names.
Now don't ask me how that would work, that's something smarter people than me can come up with. A possibility I see is somehow working the location of servers into the DNS system or something.