Yes the OptiX 7.3 license continues to allow commercial usage of the OptiX API. The link you pasted is rather old, the current license for your SDK can be found inside the SDK download in the file
OptiX SDK 7.3.0/doc/OptiX_EndUserLicense.pdf. I don’t believe we have a license distinction between internal use and commercial use anymore. I think we no longer offer any separate “commercial license”. Let me check on that and follow up here with a confirmation.
I don’t entirely understand this part of your comment:
All our code contains any Optix sample code has the original comments copied.
If you’re not releasing the source code, then I think you don’t need to worry about OptiX sample code comments, it should be fine to modify our SDK samples and release the resulting compiled binary without notice. The main licensing limitation is that you do not redistribute the OptiX SDK to third parties.
If you are releasing only a binary, and you’re not distributing OptiX to other people, then as long as you meet the other terms in the license agreement (e.g., you’re not reverse engineering OptiX, you’re not selling OptiX, etc.) then I don’t believe you have any further obligations.
If you are releasing some source code, then some additional requirements may apply; make sure to read the sections “Limitations”, “Third Party License Obligations” as well as the file
OptiX SDK 7.3.0/doc/OptiX_ThirdParty_Licenses.txt.
Be aware that no part of this message is to be interpreted as either granting or limiting any rights whatsoever. Please read through and refer directly to the End User License Agreement file distributed with your SDK download.