You will not have stolen in the same way that Google/FB don't "steal" your data.
Instead, the end user is simply forced into the position to give away their IP to you, where you can adjust the licensing per your whims, even to sell it back to them.
It's fine to consider your lack of contributors is related to the "no individual" contributors" choice that you have made, but it would be disingenuous to avoid recognition of how your choices probably result more in "no contributors".