>>79997735I won't try to be too mean because it seems like you're asking a genuine question, but "free for public use" and "commercial use" are two separate things.
Free for public use means that, because you bought the model and downloaded it, you can use it for personal use - e.g., streaming, playing in VRChat, using it for 3D content. Personal use basically means "not making money off of it."
So let's say you buy this model and you use it to dick around in VRChat. That counts as personal use. Let's also say that you like the model a lot, so you print it out and make some stickers to put on your computer or something. That's also personal use.
The difference with commercial use is, as the name might imply, that you're using it to sell a product with the intent of making profit from it. So, again, let's say you make those stickers with that model you bought, but you sell them on your online shop without asking permission. You are now selling something with a design that you didn't make and don't own, so the copyright doesn't transfer to you; you didn't purchase a license, you didn't (or can't) buy the IP, and you didn't ask for permission - you have absolutely no legal right to make money off of that design UNLESS the artist has given you the OK. Usually, commercial rights and personal use rights are outlined separately in an artist's terms of service, and common rules are either "don't use this for commercial use" or "please ask me first," where the latter may or may not require you to give some percentage of the profit to an artist (i.e., royalties).
The ads featuring the model are illegal as well. Basically, unless you asked the artist if you could make money off of it, and they said yes, then what you're doing with their intellectual property is illegal.
(footnote: obligatory i am not a lawyer. please do not take this as legal advice and do your own research.)
