I'm looking for Far too many expression's meaning.
Phrase I found the word in:
For far too many, the dream has dissipated.
Many here acts as what traditional grammar calls a "pronoun" and CGEL a "fused-head determiner". Both imply that many "stands for" itself plus the omitted noun which it modifies, which will be evident in the context. We may assume that the noun is something like "people", or a particular group of people.
Too modifies many in its ordinary sense of excess: How many people? --too many people. And far extends too: not just a few too many but too many people by a "long distance", by a great amount.
And the whole phrase is the object of the preposition for, which indicates the group to which state described in the main clause applies.
Far too many people find that their dream has dissipated.