The most common and most likely answer to this crossword clue is the 10 letter word WELL-TO-DO
I've seen this crossword clue in Financial Times
W
E
L
L
-
T
O
-
D
O
More clues leading to the result WELL-TO-DO
- Affluent / dresser in Derbyshire will have this before celebration
- Loaded spring not yet set in motion
- Comfortable, attentively awaiting execution
- Bustle previously spring- loaded?
- Rich, healthy stew
- Rich supply of water awaiting attention
- Very comfortable with healthy excitement
- In the pink bustle? Certainly not in the red
- Our lot will be enough to put in flush
- Is it right to con such people?
Buddy explains!

The straight part
We know that "Is it right to con such people" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case is it right to con such people = well-to-do.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 WELL-TO-DO mean?
WELL-TO-DO noun- People who are comparatively well off.
- Rich, prosperous, financially stable and comfortable.