What I thought DAZ would do was to only allow installing contents through their Install Manager. Reallusion has transitioned from ZIP downloads to that in iClone version 7, so there are nothing you can download after a purchase. More recently, Reallusion has introduced their "Smart Gallery" plugin for both iClone and CC3, where anything you have purchased from the store can be downloaded and installed directly from the programs, just like Rendo has done with the embedded store in Poser 12.
When installing Reallusion contents from the embedded store, it does all the authentication automatically, so the process is 100% seamless to customers. Poser 12 already has the embedded store, but is not enforcing installation only from there, since older Poser versions don't support that. The way Reallusion has dealt with that was only allowing downloading ZIPs for legacy contents, while everything else can only be downloaded and installed directly from the embedded store.
The biggest difference is that all newer Reallusion contents come packaged with DRM, which includes encryption. Only the embedded stores know how to open, decrypt, and authorize these products, which is a huge difference from how Rendo is handling this, since encryption doesn't need to call home to protect contents. Reallusion DRM is so sophisticated that protected assets automatically start a trial period with watermarks on renders for all non-authenticated contents we install. This allows customers to "try before you buy". Some contents never expire, but we cannot render without watermarks.
Considering Rendo sells contents for several different programs, I don't see how they could unify all that into a single DRM system like Reallusion did. Maybe they could only do it for the platform they own - Poser. However, I suspect Poser is only a tiny chunk of their market, which seems to be dominated by DAZ contents. That's something Rendo will eventually have to deal with.