In my opinion, I don’t think it will be too long before we see a “baby DAZ” emerging.
There was, it was called 3dCommune and theres also PA2. The “Guild” idea is also something that been around a while.
Last serious attempt was SMART with the likes of Meshbox, ontarget and philc.
Thing is while most folks want to support the indies, unfortunately because of time constraints and simplicity everyone communicates and shops at the big sites. It’s roughly similar with sellers as well, it’s very time consuming to adapt a product for each store. Different licences, promo sizes etc. Upload times.
It’s the same with advertising on twatter and facb*llox, folks don’t have time to visit all these places.
Which is precisely why you’re right that we need a ‘one stop shop’ - which already exists here now.
Edited to add..
”..how will this effect the linking of free stuff on sites that are commercial.”
Well hopefully daz will be more community minded than the other place.
If your site sells anything you can’t link to any freebies held there.
You can only link to a totally free site.
Also what happens if the other site is ad supported like sharecg. Which will show products from other stores.