Okay the company is always going to be worth more than the domain name, so long as it is not operating in the red. But the recent sales of domains like porn.com for $9.5 Million and vodka.com for $3 million shows how valuable some domain names are.
Poker.com is about to be or just has been sold and the price mentioned was $27 million. Now it would have been nice to buy that one say 10 years ago - the lottery ticket of domain names.
The thing that applies to search here is the fact these buyers value the domains mainly for write in traffic, but also for the impact they know it has in organic results. Even with all things being equal the domain will always be a tipping point.
So craft your domain name well and remember the words are very important.