Google already fixed this. No one directly navigates to domains anymore. The SERP is a popularity-ranked page of everything that should be at the domain for the keywords you searched on.
An interesting thought experiment would be what would happen if you removed all domain names. You own a random series of letters that you keep even if your IP address changes, but the sequence is totally non-mnemonic. Google and del.icio.us would be very important. But how would we get there?
I personally would like to get rid of http, www and com all along
Just type a name and presto!
It's just easier to remember the name of a site than it's literal/direct address. Even if they are one and the same 90% of the time, it turns out to be faster using google.