Content – narrow or not?

I have been in business for 11 years running an accounting and financial coaching business for U.K. small (<£2m revenue) businesses.

I love social media and geek out on it.

My content is all based around financial things – pricing, profit etc.

Part of me would love to produce content (particularly for my YT Channel) which is around general business, social media marketing, sales etc.

I cannot work out if that is just me wanting to show off my knowledge, me wanting to reach a bigger audience due to vanity/ego, or if it is a good idea!

Any help on this would be appreciated.