On the second question: no one bids as high as Google, simple as that. Others may emerge, but no one's gonna pay that much, and with Google out of the race, the bids can get even lower.
Can't say for TeamSpeak, but will say for Linux: setting everything up and figuring out your steps in edge cases is the hardest part. Once you figure it out, it gets so much easier.
Currently I run a secondhand Dell Latitude, it was well cared for and is in a great condition, even the battery capacity sits at 94%. Runs Linux like a charm. Couldn't be happier about it and hope it lasts me a while.
Fair, but do you have to manipulate them at the same time? Most of the time we use our hands to hold something, or do very simple repetitive movements. This doesn't require much brain power to do, and is still very useful. For example, such arms could hold our bags, while our natural ones can do whatever else.
Not only that, but it also affects the decision making. For example, quite recently Russian maintainers were removed from the Linux kernel, citing "compliance".
It's easy to imagine same thing happening to Chinese maintainers, for example. And then from other countries. This, too, can strongly affect not just Linux, but FOSS landscape as a whole.
Thanks for bringing up the European foundation, I'll look into it!
Some apps and front ends support showing your post and comment "karma". Eternity, for example