Yes, there were some reports of some of the UK banks cancelling services to customers involved in crypto trading, but I don't think it was necessarily due to those banks hating on crypto, but more about the fact that such transactions would fall under "suspicious" in their systems. That could mean that such transactions triggered internal investigations, and since the cost of employees' time is not cheap, keeping those customers would mean making losses, so it was easier to just kick them out.
Such a policy may be quite extreme and more unfriendly to customers.
Despite engaging in crypto transactions, do they have the right to interfere in private transactions made as long as it is not a crime.
Unless the transactions made exceed a reasonable amount of transactions, seen with very large transactions.
That could possibly be a necessary review.
But if it is just a small trading transaction, let alone a transaction made on a local Exchange that is already registered.
Strict service to their customers is also influenced by regulatory issues.
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And I think, as crypto becomes more mainstream, "unfriendly" banks will be changing their stance as well, if they haven't already.
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They have to change their attitude, "Unfriendly" banks will only be the ones that are left behind and cannot evolve with the latest payment technology today.
More rules means more understanding of what their customers are using, more flexibility and not making rules that favor their own company.