[miraculixx]

Well yes and no.

Yes it's ok to use OSS to operate your business. That's a sound and intended way of using OSS. Everyone benefits.

No it's not ok to provide a competing product to the very people that you get the core of it from. That's literally stealing if not fraud. At least it is ethically dubious.

I'm not saying it's literally a yes/no decision, but this is the baseline.

I think OSS projects should offer a paid for "integration license" by default.