it is very complicated to obtain a clear overview of the situation regarding virtual currency schemes
at this stage. Almost all of the information that can be found is on the internet, written in blogs
or on web pages where personal bias cannot be excluded (see, for instance, the references listed
in the Annex). With the exception of a few articles from respectable media sources or economics
journals, it is almost impossible to find any comprehensive papers on this issue, since no
international organisations have published statements. A similar problem exists with regard to the
quantitative information and statistics that would be needed in order to assess the speed at which
these virtual currency schemes are growing and the point at which they could become a real threat.
Well yeah, the whole point of the ECB is to inform the banks on upcoming market trends, including possible disruptors. From the tone the author is taking, it seems like it's just something they'll have to plan for compete against for their own survival. I interpreted the bolded line as the banks will have to have reserve requirements on holding virtual currencies as that'll be the only way they'll be able to hedge against virtual currencies taking over as a matter of survival. The only avenue they have against bitcoin is through manipulation of legislation to regulate Bitcoin-fiat exchanges, but if Bitcoin plays out how the creators envisioned this protocol faster than the slow process shutting something P2P like Bitcoin down, then that won't matter as we move into a Bitcoin-denominated marketplace.