I really don't think Expo2020 counts. Rooting the future in the UAE seems like a losing battle, and it seems like the amount of entities that would choose not to participate would outweigh those that would.
Switzerland? The Nordic countries? Even the UK hasn't annoyed most countries to the point we wouldn't welcome guests for something like this.
It's basically the equivalent of the Olympics of the business and science world; of you are granted the honour of hosting, you go out of your way to extend an olive branch.
Oh, you have got to be kidding. Quit it with the Nordic worship.
I mean, they're pretty great overall but all the problems you think the USA has, they have in spades. And while they are great they aren't solely because of ideals as much as luck of their conditions forging a good culture and climate for success.
We fundamentally believe in the prosperity of our physical world. The fair itself will be physical, but will have a virtual component so that anyone with a smart phone or, even better, a VR headset, can participate.
Countries are made up of people and companies. There are definitely people and companies that otherwise would attend were it not at a country with massive human rights issues (like, say, making homosexuality illegal).