They are looking for a way to profit of it.
And to make the price fall to buy cheap is a GOOD way to make a profit...
I think if the bankers really care about the future of technology then I think they don't deny the cryptocurrency and they will give support cryptocurrency because from time to time, new technology will come out and if they don't follow and give support, I think they could not make any profit at all. they should realize that the new technology will be work with them and deny or not, the new technology will do the jobs to do the best things in the each of job.