The Group object on WeWrite is for communities to have shared ownership over their collection of Pages
Warring communities can exist on the platform, they can either engage one another or they can decide to avoid one another. May the best ideas win! (by getting the most donations)
Normally these are on Discord Telegram etc
Whop and Patreon and Skool etc. have paid communities
WeWrite won't really have payment-gated communities, but rather a swirling Big Stage with many Small Stages bubbling up, where each "performance" on stage (written page) is a fundraiser.