Phrase for taking a group of people to a "higher culture"?

In a story I'm translating, a character says this (literally translated).

I will bring idols to the heights of culture.

This particular character often talks about (and acts upon) revolutionizing the (Japanese) idol industry. Like bringing an industry in decline back to life. So in this sentence, he speaks of taking these idols from a state of decadence to something opposite of that and further. Is there a phrase, expression, or idiom in English that can describe this?

Though it most often refers to improving an urban area, the verb gentrify carries this meaning as well.

gentrify ... 1.2: Make more refined, polite, or respectable.

• ‘there has been an attempt to gentrify the game, making it more attractive to the middle class’

[Lexico]

• In 2021, Switzerland introduced institutional as well as financial laws to provide a solid foundation on which to build a more gentrified and regulated crypto industry.

[Amara Khatri; Cryptodaily]