Yep, and our customers would be absolutely screaming bloody murder if this was the case, because they are effectively charged per pageview. Rogue bots doing excessive pageviews are something that cost them money, and would cause them to leave our hosting platform. That’s why we throttled Bing so heavily, for example – feel free to have a search if you’re curious.
So yes, our 7+ years of hosting experience so far has demonstrated that rogue webcrawler / bots, while they do exist, aren’t a significant problem.
(I’d say the same for Stack Overflow, which is a top 100 web property that I co-founded.)