Another thing that i always wanted to know if the art submitted by the people who get the prizes, do those become the propriety of Roobet.com ?
I've won design contests before and the contest results are used by the contest owner for the logo of the platform, so I think any art from the contest win will be claimed by Roobet. The design results uploaded must be unique and attractive according to the rules above, professional designers usually will not use the same design for other contests so that the results of the art contest will absolutely belong to the contest owner, the prizes given are equivalent to your efforts to win this art contest.
As far as I know they are not getting the original file of the art and I didn’t see they use any art for their marketing purposes, this is solely for the purpose of contest. They are actually buying the physical art as they post an offer before, maybe they are planning to have a museum for the Roobet art.

they're buying the physical art? that's amazing, didn't know that
where did they announce it?
a roobet museum with all the art would be interesting
physical and digital
maybe even minting NFTs mixing art and utility
the contests definitely play a role on their marketing since we're always talking about it
Don't see them either buying some arts directly to an artist. The one I mostly see here is they are always running a contest where many artist join and try to win those appealing prizes offered by their management.
Also Nft of those art piece submitted before has been discuss but there's no feedback on roobet side if this will happen since maybe they are avoiding something that can distract or disturb their operation so I guess they are not really have a plan to create a NFT with those submissions of their art contest participants.