I think the issue with most datacenters is the frequency, not necessarily the noise level. A low hum that permeates everything, even if it's not "loud" can become debilitating.
When I questioned whether or not I was autistic (at 31) with my therapist, it made me realise how contextualised and nuanced it was, how ingrained it was and what couldn't be explained by autism was actually ADHD. It turns out I have both (as many do).
Now everything just makes sense, but it took me almost 3 years of introspection, reflection and work to see it all (or most of it, I'm pretty sure there are things that I haven't entirely noticed or understood yet).
The goal is to have it low enough so that every single country in the world agrees to set it up, even tax havens like Bermuda, Luxembourg or Monaco. But high enough to be effective. Then, once it's agreed upon, we can make it better and more progressive.
The 2% would be applied to households worth 100 million dollars or more, I'm pretty sure they could spare the change without much impact on their lifestyles.
Yeah, a 95% marginal tax rate and both a massive inheritance and transfer of assets while alive (not sure how it's called) taxes would solve most of the problem.
These dudes saw Terminator and sided with Skynet