Didn’t think about the side effect… Maybe it is a nice thing. In fact, they can keep their first art if they want. My original idea was: The people usually I’m interacting with came from different blockchains (mostly BCH - SLP, ETH OpenSea, EOS - wax), they still are not famous and they don’t even have any NEAR. So having something already working, without first need to pay 7 NEAR will be an easier way to start. Mean more people can start with Mintbase right away. If there are enough profits to pay the initial 1 NEAR for the wallet and some small amount for enabling initial Mintbase transactions, it can help to onboard many new artists.
With Mila (my first co-minter - is there such word…) I asked for just one NFT in my store, cause I’m an engineer, not an artist. She was generous enough to make me a lot of NFTs 
As I said above - nice collaboration, happy to do this again.
I think Mila is doing the same thing with her store now - she even has more co-miters than me 
- anfta.mintbase1.near - Mintbase Store
It will be interesting if all profits from some store can be redirected to sputnik.fund DAO (so putting DAO address in the shared profits, not mine address…) so funding new artists can be more automated…