I'm starting a startup, and our model will be similar, but not properly open core. We will have a fully open source library and a source-available server which

I'm starting a startup, and our model will be similar, but not properly open core. We will have a fully open source library and a source-available server which will be closer to "open source, but you pay for more than 100 accounts. After X years, agpl". This can't be open source because it breaks the definition on free redistribution and no discrimination. This will require us to create a new license, but while I believe in open source, offering only support is not sustainable, and we have seen too many companies basically stealing the work of others and not giving back anything. Yes, there are developers and even companies sustained not by the code itself, but they are a drop in the ocean of normal companies for multiple reasons. Our license is still in development (we don't even have a demo yet), but if anyone knows of discussions on the subject, any idea, any pointer is appreciated.