No. Usually spam companies are advertising something - let's say, viagra. If they send out 10,000 emails with links to an online viagra store, they certainly don't expect everyone to actually follow the link. But if they get something like 10 people to click on the link (Or somewhere in that general realm - the point is just that it's a very small number, but it's justified based on the fairly low cost of spamming people) and maybe a few of those to actually pay money at said store, or perhaps just be looking at advertisements on the website they've been linked to, then spammer is ahead of the game.