> they can be used to chip away at open source business models by implementing paid features and providing the support
There are a lot of things to be sad about AI, but this is not it. Nobody has a right to a business model, especially one that assumes nobody will compete with you. If your business model relies on the rest of the world bring sucky so you can sell some value-added to open-core software, i'm happy when it fails.
Competition is extremely important yes. But not the kind of competition, backed by companies that have much bigger monetary assets, to overwhelm projects based on community effort just to trample it down. The FFMPEG Google stuff as an example.
When LLMs are based on stolen work and violate GPL terms, which should be already illegal, it's very much okay to be furious about the fact that they additionally ruin respective business models of open source, thanks to which they are possible in the guest place.