Perhaps they're referring to the resources to make devices Roon Ready - that could be significant in terms of development time (man-months) depending on individual hardware and software architecture.
Edit: On second thought, a more likely scenario is that the hardware manufacturer you talked to relies on a third party to make their devices Roon Ready. Many traditional audio companies have expertise in hardware, but would seek external help for streaming / software.
Edit: On second thought, a more likely scenario is that the hardware manufacturer you talked to relies on a third party to make their devices Roon Ready. Many traditional audio companies have expertise in hardware, but would seek external help for streaming / software.