Factory that is invested in by broadcasting tycoon? (11)

I believe the answer is:

millionaire

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But I can't explain it at all! Could you help me understand?

(Other definitions for millionaire that I've seen before include "Rich fellow" , "See 14" , "Very wealthy person" , "Airline limo (anag) - rich person" .)

I've seen this clue in The Independent.

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