https://civitai.com/articles/5840
Standard disclaimer; This post does not constitute legal advice. How you interact with SAI and their product is up to you. You should seek your own...
SD3 is looking like it's even worse than SD2. I'm sticking to SDXL finetunes until something better comes along.
They should probably do the same with cascade, seeing as that license seems to be more restrictive as well
Cascade is really funny, because for the first four days that it was uploaded to huggingface, it was under the MIT license. So it technically doesnt fall under the same SD3 license if you downloaded it before the change to the current license. At least in theory. Dont think anyone will want to test it though. Check the commits of the model on huggingface if your want to see for yourself.
This sucks - as any previous model, SD3 could only spread its wings with the community input. As long as the license stays restrictive, community tuned SDXL will remain superior in almost any aspect.