I doubt this very much myself too! I little wishful thinking to be honest.
However you're arguing as if new competitors had to monetize the same way Google does and that's not the only game available. Imagine a competitor that doesn't monetize clicks but works on donations (like wikipedia does). If results are higher quality than Google's the users will follow. Or maybe a search engine that promotes a particular product like a CRM tool for example.
Disruption typically doesn't come in obvious ways or else someone else would have done it (including Google and its gazillion dollars).
However you're arguing as if new competitors had to monetize the same way Google does and that's not the only game available. Imagine a competitor that doesn't monetize clicks but works on donations (like wikipedia does). If results are higher quality than Google's the users will follow. Or maybe a search engine that promotes a particular product like a CRM tool for example.
Disruption typically doesn't come in obvious ways or else someone else would have done it (including Google and its gazillion dollars).