I think you're drastically overstating what happened regarding Swiss banking secrecy.
Switzerland agreed to FATCA, which only applies to people subject to US taxes and allows those people to refuse to have their information shared with the IRS, in which case the IRS has to specifically request it.
The "massive changes" you mention essentially consist of banks asking you if you're a US person and then, for the big banks, making you fill out a bunch of paperwork and for the small banks, refusing to open an account for you. If you're not subject to US taxes, there's no effect on you whatsoever.
I think the _much_ more interesting thing, which is unrelated to the US (as it's not a party to the agreement) is the AEOI [0].
Anyhow, Switzerland is still very much a sovereign nation and the fact that it has agreed to give limited financial information to the US, with consent of the account holder, does not change that.
A fun bit of proof: copyright infringement, one of the US's pet peeves, is still very much alive in Switzerland. It's your legal right to make as many copies of something as you want and give them to your friends and family [1].
And ultimately, the US' power over Switzerland is quite limited due to the referendum system. Any change they'd like the government to make has to have the consent of the people. The Swiss are quite protective of their privacy so I don't see the US having any success weakening that.
I don't know if you realize how absurd this is: imagine if you, as a US citizen, in the US, had to answer whether you are subject to Swiss taxes any time you wanted to open a US bank account.
Also, for stock accounts, you'd be required to fill out a form in German/Italian/French regarding Swiss taxation.
Switzerland agreed to FATCA, which only applies to people subject to US taxes and allows those people to refuse to have their information shared with the IRS, in which case the IRS has to specifically request it.
The "massive changes" you mention essentially consist of banks asking you if you're a US person and then, for the big banks, making you fill out a bunch of paperwork and for the small banks, refusing to open an account for you. If you're not subject to US taxes, there's no effect on you whatsoever.
I think the _much_ more interesting thing, which is unrelated to the US (as it's not a party to the agreement) is the AEOI [0].
Anyhow, Switzerland is still very much a sovereign nation and the fact that it has agreed to give limited financial information to the US, with consent of the account holder, does not change that.
A fun bit of proof: copyright infringement, one of the US's pet peeves, is still very much alive in Switzerland. It's your legal right to make as many copies of something as you want and give them to your friends and family [1].
And ultimately, the US' power over Switzerland is quite limited due to the referendum system. Any change they'd like the government to make has to have the consent of the people. The Swiss are quite protective of their privacy so I don't see the US having any success weakening that.
[0]: https://www.efd.admin.ch/efd/en/home/themen/wirtschaft--waeh...
[1]: https://www.admin.ch/opc/en/classified-compilation/19920251/...