Able to bounce back well, like billionaires? (6-6)

I believe the answer is:

spring-loaded

I'm a little stuck... Click here to teach me more about this clue!

'back well like billionaires?' is the definition.
I can't tell whether this defines the answer.

'able to bounce' is the wordplay.
'able' becomes 'loaded' (I am not sure about this - if you are sure you should believe this answer much more).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'bounce' becomes 'spring' ('spring' can be a synonym of 'bounce').
'loaded' after 'spring' is 'SPRING-LOADED'.

Can you help me to learn more?

I've seen this clue in The Guardian.

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