If the value is in "search engine that uses the PageRank algorithm", then theoretically you can take that idea and execute it to get the same value.
The difference isn't in the idea but the execution - hence the value.
The difference isn't in the idea but the execution - hence the value.
EDIT: Oh I see what you mean now. By "you", you actually mean me. No, I couldn't, because Google has parlayed their initial good idea into a monopoly based on network effects, specifically the accrual of proprietary data (clicks) which I have no access to.
The idea was valuable in 1997. It's no longer.