The most common and most likely answer to this crossword clue is the 9 letter word PLUTOCRAT
I've seen this crossword clue in The Guardian
P
L
U
T
O
C
R
A
T
More clues leading to the result PLUTOCRAT
- Cartoon dog runs into a potential enemy. One could bankroll the movie?
- Rich person in airport town nearly nabbed by copper, despicable type
- Capitalist rating business: union record on the up
- Wealthy leader‘s funny dog caught traitor
- Idiot with clout surprisingly accepted — he has the means to govern
- God starts to create really awful, terrifyingly rich man
- Dives with power to crap — occasionally gull slightly worried tour leader
- . Film dog and feline running round royal 4
- Animated dog caught rodent and fat cat
- Rich person displaying heavenly body, Conservative scoundrel
Buddy explains!

The straight part
We know that "Dives with power" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dives with power = plutocrat.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PLUTOCRAT mean?
PLUTOCRAT noun- Someone who rules by virtue of his or her wealth.