Maybe for banks, it is not possible to ban the Bitcoin because already Blockchain tech is implemented in many big organization. An Even big country like the US till now they did not announce about banning the Bitcoin and but they want to regulate the ICO conducting procedure.
big organizations aren't what make bitcoin so durable, it's the many individual users that have adopted it and support its growth. with bitcoin, the power doesn't all go to the few big players, although they may control a sizeable influence, a decentralized network such as the one bitcoin is based on allows more pull on the side of the many. we run the nodes, we run a fair portion of the mining network power, and we use most of the transactions.
as for regulating ico's, I think it's a good move overall; these projects involve millions in crowd funding, that alone, I think, necessitates regulation. not to mention the scams.