Indefinite article + noun + that + be + adj [closed]

Solution 1:

A type of wealth that is possible because celebrities are often seen as role models, and so people want to copy them and buy what they have. is an elliptical sentence:

Elliptical sentence construction involves the omission of words from a sentence. These omitted words are implied by other elements within the sentence. Elliptical structures include a noun ellipsis, a verb ellipsis, or a verb-phrase ellipsis. (Masterclass.com)

In your example, the implied elements are in the previous sentence. With the omitted words, it could be written as:

[This (earning huge amounts of money from promoting luxury brands) is] a type of wealth that is possible...