It's expensive, has high min deposit, high fees, they do a colonoscopy when you want to open account... sounds like their entire competitive advantage was laundering money for criminals and now that they are forced to stop doing that (allegedly), the bank has no raison d'etre.
You hit the nail on the head. Now CS is forced to do clean business they are suffering. They are not competitive, credible or competent over peers. The end of banking despots, criminals, market manipulation, deceiving customers etc may be affecting their business model adversely. Criminal Services also known as CS or its new entity CSFB (Criminal Services For Billionaires) has an uphill battle in any case.
Summary of CS major fines ($12bn) over last 10 years
https://www.srf.ch/news/wirtschaft/credit-suisse-unter-druck-die-bussen-sammlerin
(You need to translate to English)