Yep. All these tech giants are taking the labour that people provided to the world in good faith in what I've seen described as a gift economy, and trying to lock it up. On the internet for the longest time people were providing their knowledge and fruits of labour for free, anticipating reciprocity (which on average they got). They stopped when reciprocity stopped. Platforms would monetize their efforts, control the distribution and often remove the reference to the creator.

These AI systems are being build on top of all the collective effort and resulting knowledge of the entire humanity. We can pretend they are just another private enterprise or we can acknowledge that they are something more than that.

And it's not just the productivity we could achieve with democratizing these systems. There's another danger. When big companies buy up all this intellectual property, what better choice would they have than to lock it up? At least until recently you could argue that IP rights owners were as entities incentivized to proliferate this knowledge, now the opposite is happening.