RE: The Banks invented Bitcoin!!!
I also suspect banks are behind it. Besides loosing additional source of income, banks also lost their reputation, in 2008 and the same year Satoshi appeared. (is it really a coincidence?). Blockchain eliminates the need for third parties which may significantly reduce the cost for banks. (Imagine how much money is paid to Visa, SWIFT etc). It also opens a door to new markets. The main opportunity is in remittances and the unbanked population. This is understandable for underdeveloped countries (people with low-income really don't need the bank), but only the most developed countries already regulated the use of cryptocurrencies. (Does Switzerland really have a problem with unbanked population?). The last but not the least, bankers are among early adopters, from day one (proven).
Interesting thought you have!
I think important to know is that the Swiss bank not just operate in Switzerland they operate all over the world, what you probably know. And they wanna stay in the game. Now the unbanked population isn't really big. But what does happen if it grows?
Sure, that's the reason to care for the unbanked population as it's a new market for Swiss banks. However, the number of unbanked will never grow significantly in Switzerland or nearby. If it starts to happen the state will help and it's the only one who really needs banks. Somehow I don't worry about banks, they will for sure find a way. Swiss is the great example. They have only few hundred years of financial stability, mainly thanks to the fact that they accepted everything above a certain amount... why not bitcoin? (Nice topic BTW)