PacmanDo

I respectfully disagree. A very common marketing modal is to open up a free Facebook group, then plug your premium service delivered into a closed Facebook group via a PayPal link.

Invision Community can do this with better integration and more granular permissions.

I prefer communities without (external) advertisement. 
The only real interesting part for me are the IPS subscription services which are highly customizable.
My monetization strategy is
virtual currencies / points systems that integrate perfectly into commerce/downloads. It's a natural incident, that most customers never use/spend all their deposited credits, so the community wins all forgotten or expired credits.  better handling for transactions for digital products for european union customers/members, so we won't get in conflict with laws and tax regulation. Please help us expand in the EU and reach out for more paying customers. something like an IPS native "automation rules" / trigger systems, if event x happens then do y (f.e. send pms, emails, react, superlike...) the more you can target and engage your members (and add your own ads in there) the more will be sold. With such a trigger system, make it happen to generate personal vouchers and limited time offers enhance email marketing campaigns, introduce options for bulk email subscribers filtering, so we can entice more members to subscribe into bulk emails, award subscribers (with community benefits), disclose the opt-outs. As soon as you have a bunch of willing subscribers and good, valid emails, you have a very high chance to power up your conversion value. If you don't like (external) advertisements in your own community, but you already are a commercial actor, then monetization requires a different strategy. 

I cant wait to see the "post before register" functionnality
 
This will be a major revolution that will really boost engagement