This is not that uncommon. e.g. many Broadcom SoCs uses various code from opensource projects - Broadcom doesn't sell to end users though. They publish a (smal

This is not that uncommon. e.g. many Broadcom SoCs uses various code from opensource projects - Broadcom doesn't sell to end users though. They publish a (small) document to their customers detailing what they have to do as they retail the end product using this particular chip. Which licenses they have to reproduce in documentation and which links to place there pointing to the original source code where that's required. If that's a burden you do not want to place on the customers - indeed, you need to be careful about the selected license.