If you say the sky is the limit, you mean that there is nothing to prevent someone or something from being very successful.
They have found that, in terms of both salary and career success, the sky is the limit.
Frequently Asked Questions (FAQs)
The idiom ‘The sky is the limit’ means “to deal with a difficult situation without being harmed or damaged”
Example usage of idiom ‘The sky is the limit’: Newspapers have weathered the storm of online information by providing news online themselves.