Banks may be more prudent now, but back in 2017/2018, many banks were heavily invested in crypto. They cashed out at the height when the government began putting in place measures to regulate crypto. Blockchain technology will serve even banks.
Such as, be more precise and give us an example on what banks are investing with crypto that time.
There are a lot of banks in the world, therefore they are big in numbers so saying many is would mean they it will pour money in crypto and I don't see an institution such as bank will just invest with crypto when they are also guided by the banking law.