Indeed that's my thought.
I've had friends who have played for top teams. I've gone to support them (Saracens and Quins) but I love rugby and would go to watch a local team. The mentality is somewhat different insomuch people go to watch rugby and enjoy the occasion.
https://www.bbc.co.uk/sport/rugby-union/67193921
With some of the top rugby sides almost seem a franchise teams would one moving to Brighton be a good thing? Developing a new ground that can be used by the women's team and a first class rugby team must be a good thing.