Here's an excerpt from the CC0 FAQ page to clarify:
Once the creator or a subsequent owner of a work applies CC0 to a work, the work is no longer his or hers in any meaningful sense under copyright law. Anyone can then use the work in any way and for any purpose, including commercial purposes [...] Think of CC0 as the "no rights reserved" option. CC0 is a useful tool for clarifying that you do not claim copyright in a work anywhere in the world.
In other words:
We believe the benefits of using this license outweigh the obvious drawbacks for us as a business.
Yes it's possible that unethical users can (and do) resell our work for their own profit, at the cost of unwitting customers who didn't know they were purchasing content they could get here for free.
But what the 3D industry as a whole gains from our work being so freely available is immeasurable
3D art is also only the tip of the iceberg, we've heard from numerous data scientists, software developers, automotive engineers and AI researchers all using our assets in their work, which simply wouldn't be possible with more restrictive (even open source) licenses.
We don't have anything against Copyright in general, we simply believe we can do more good in the world by providing as much freedom as possible.
If you benefit from our work financially, e.g. by including our assets in a product you sell, or simply make frequent use of them in your own work, please consider supporting us on Patreon with a small monthly donation in order to help us continue to produce more assets and maintain this platform.
Although our assets are shared under the CC0 license, and our code is open source, we maintain a standard Terms of Service agreement to prevent any misuse of this website (polyhaven.com).
By using this website, you agree to be bound by these Terms of Service (ToS). If you do not agree with any of these terms, please refrain from using this website.
We reserve the right to modify these ToS at any time. It is your responsibility to review these terms periodically for any changes. Your continued use of the website after any changes to the ToS constitutes your acceptance of those changes.
3.1. You agree to use this website for lawful purposes only.
3.2. You must not engage in any activity that may disrupt or interfere with the proper functioning of the website, including but not limited to:
4.1. All content on this website, excluding the CC0 assets themselves, is protected by intellectual property laws. You may not reproduce, distribute, or otherwise use this content without prior written permission from the website or intellectual property owner.
4.2. Examples of such content includes but is not limited to:
The use of the public API hosted at api.polyhaven.com is governed by separate API Terms. By using the public API, you agree to abide by the API Terms in addition to these Terms of Service.
We reserve the right to terminate or suspend your access to the website at our discretion, without notice, for any breach of these ToS or for any other reason.
The website is provided "as is" without any warranties, express or implied. We do not guarantee that the website will be error-free or uninterrupted. You use the website at your own risk.
To the extent permitted by law, we shall not be liable for any direct, indirect, incidental, consequential, or special damages arising from or related to your use of the website.
These ToS are governed by and construed in accordance with the laws of South Africa. Any disputes arising from these ToS or your use of the website shall be subject to the exclusive jurisdiction of the courts in South Africa.
If you have any questions or concerns about these ToS, please contact us.