15 across
Entrepreneur
Bill
upset
agribusiness,
returned
feeds
(5)
Entrepreneur Bill upset agribusiness, returned feeds (5)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
See Entrepreneur Bill there — that's pointing you to Bill Gates, the business magnate, which is also your definition. Now look inside "upSET AGribusiness" — hiding right there backwards are the letters SETAG, and "returned" tells you to flip that sequence round to get GATES.