That is part of what Alma and Rocky argued they could do to get upstream source. However they’d likely have to sue the middle man first. E.g if you need RHEL so

That is part of what Alma and Rocky argued they could do to get upstream source. However they’d likely have to sue the middle man first. E.g if you need RHEL source, but you’re a customer of <cloud provider>, you have to use cloud provider to provide you RHEL sources. They can then get it from RHEL, but the cloud provider is not a reseller in this case, but just someone who built their house on a product. However that does allow RHEL or the cloud provider to cut off customers who are actively engaging in source forwarding. The GPL doesn’t dictate who you do business with, and you effectively end up in a stalemate. Vizio on the other hand doesn’t have the power to prevent you buying their product. Buying from a reseller like Best Buy is legally equivalent to buying from Vizio when it comes to support. Therefore Vizio has a direct customer relationship with anyone who wants the source.