If you play it right - yes!
I bought a long dead Latvian internet business forum ibf.lv 3 years ago, migrated from phpbb (one of the very earliest versions) to wp, restored, cleaned most of the spam, relaunched it 9 months ago + I'm doing fb lives on this topic.
Now, I've started running monthly meetups (for small fee - still they make some profit).
Moneywise - I'm in small pluses.
Authority-wise - no comments (you will make your name known to your niche in no time)
Connection-wise - A+++++++ solution to boost the number and quality of people from your niche youŗe in.
The dark side:
It is very, very, very difficult to start a new online forum/community these days and most attempts will be just a waste of time and energy > FB groups are huge competition to almost any niche (apart from adult, guns and gaming).
And you will need to invest tonnes of time, patience and good amounts of cash in building it.
My advice: Just do it

.. The value of new fantastic (possible) connections can change your life and give you opportunities you've haven't had before.
best of luck!
H