I will not like to use the word afraid, they are just doing everything they need to do to stay relevant and still be in business. The world of Cryptocurrency has become a great competitors to bank that they didn't see coming. It is only natural to try everything they can to discourage people from getting involved in cryptocurrency and patronize them more. However noting can stop an idea whose times has come. Banks  can tap into cryptocurrency and use it as a platform to build their sector and in that case it can also becomes a win situation for them.