Maybe the market of people that are significantly different from his/her mom is just too small to justify the significant investments needed to build a search engine.

Or said another way: If 99% are happy with Google, can the remaining 1% pay enough to finance "Google pro" ?

Is there an alternative search engine right now that is both good and not based heavily on an incumbent by a large tech company (ie: bing)? If not then the argument isn't disproved.