The most common and most likely answer to this crossword clue is the 9 letter word ADDICTIVE
I've seen this crossword clue in Financial Times
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More clues leading to the result ADDICTIVE
Buddy explains!

The straight part
We know that "getting people hooked" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case getting people hooked = addictive.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 ADDICTIVE mean?
ADDICTIVE noun- A drug that causes an addiction.
- Anything that is very habit-forming.
- Causing or tending to cause addiction; habit-forming.
- Enjoyable.
- Characterized by or susceptible to addiction.