I think you are confusing substantiated, well supported, warrants/subpoenas/etc and tax collaboration agreements, with arbitrary user requests, gag orders, mass surveillance, etc. The two are at opposite spectrums.
My understanding is that in the bit mail case, the government didn't just ask for data. They also asked for code to be modified. So really, any technical solution done by coding, well, the government can just ask you to un-code it.
(Leaving aside that any such request would necessarily have to be a "secret warrant", which is dubious to begin with. And leaving aside mechanisms like warrant canaries, signed binaries, and Open Source clients, all of which would provide additional avenues for both detection and legal challenge.)
http://law2.umkc.edu/faculty/projects/ftrials/conlaw/compell...
Quoting Farquet 2012:
In a subordinate position before the war, notably with regard to the competition of France and Germany, Swiss bankers took advantage of the new international context to affirm themselves as figures of substance in the financial world at the beginning of the 1920s. Although, for example, the cumulative balance sheets of the major Swiss banks represented only 26% of those of their French counterparts in 1913, they subsequently amounted to 73% in 1929.
The Swiss financial centre was particularly renowned in the sector of cross-border wealth management. In fact, foreign capital flowed en masse towards the Swiss haven in the interwar years. According to a [League of Nations] report, owing to the importance of foreign assets, in 1929, Switzerland possessed by far the highest per capita total of bank deposits in the world. The lack of a reliable balance of payments, as much as the absence of the legal obligation for Swiss banks to publish details regarding their accounts, nevertheless prevent an exact estimate of the total amount of imported capital. Banking balance sheets indicate a general trend, but are inadequate sources.
A committee of experts working on Swiss history during World War II who, exceptionally, had access to the in-house archives of the banks, showed that holdings of securities, generally in off-balance-sheet bank custody accounts, represented, in the two biggest Swiss banks in 1931, more than three times their balance-sheet.
[http://www.ehes.org/EHES_No27.pdf]
End quotation.
Needless to say, the confiscatory tax rates in the U.S. during the late 50s and 60s made going after Swiss accounts attractive. But the Swiss were having none of it.
So are the two situations you mention genuinely at opposite spectrums? Or is Switzerland's special brand the product of a persistently muscular political consensus that, after more than fifty years, may now be flagging? And if the latter is the case, then the OP asks a fair question.
Do you accept all warrants from the US? All warrants from Russia? All warrants from Syria or Iran?
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