I think it's a general sense of unease with the probability that future F/OSS looks like "{Project}, sponsored by Amazon" due to cloud market dynamics and size.

I think it's a general sense of unease with the probability that future F/OSS looks like "{Project}, sponsored by Amazon" due to cloud market dynamics and size. Coupling that with the fact that, in the past, F/OSS project control or domination by a single party hasn't turned out well.