Right now, some of the establishment ignores B, another considers it a scam and a ponzi only fit for criminals, the third wants to kill it as a deadly competitor, and so on...
...
It's NOT "required" to follow their ISO.

You think you are going to "get Bitcoin accepted as a mainstream investment in the world's financial markets" by adopting their rules of the systems that B was made to make obsolete?

As the great Casascius saying goes, that would be "a screen-door submarine with a wood trim!"
...
There is no part of the establishment which wants kill Bitcoin - yet. Only the ECB and Fed are probably aware of its potential. and they are still mulling over a response. 99.9% of the mainstream establishment in the financial markets have a totally different view:
make as much money as humanly possible in the shortest time!This means 99.9% of the establishment would throw their grandmother under a bus to get a piece of Bitcoin action, if and when it really takes off (and I am thinking $100+ fx rate).
We need to give them this chance as it helps cement Bitcoin before central banks can act against it.The problem for Bitcoin is that it needs an ISO code to get loaded into existing trading systems as an instrument for investment. Not having one is a monumentally serious handicap, making Bitcoin as fringe as North Korea Telecom.
BTC is fine for informal Joe Doe use, but this is nowhere near enough.