That would probably depend on the terms of the IP licence. Does it cover downstream users, or not? If you're a platform, you get (hopefully, if you were properl

That would probably depend on the terms of the IP licence. Does it cover downstream users, or not? If you're a platform, you get (hopefully, if you were properly advised) what you paid for. What you then represent to your downstream users to bring them to your platform should be honest, though. Prospective platform users presumably want to known whether this is a good platform for their business, i.e. IP-sandboxed, reliable, safe, with large footfall. It presumably wasn't in fact IP-sandboxed. By that I mean that the upstream licensors have been selfish in their negotiations, or the platform doesn't indemnify you against claims, or even at least offer to coordinate a circling of developer wagons. What's interesting to know if whether they've nevertheless held it out as an IP-safe platform; if not, caveat emptor probably applies, and developers are now presumably kicking themselves for not making IP safety a part of their due diligence before contracting with apple, etc, for a platform on which to build their business. Realities aside, it's tremendously regrettable that indy software developers and inventors are supposed to have to worry about third party IP rights, particularly over their usage of major commercial platforms for their business.