And this has not just been due to their own direct actions, but the failure of self-custody products are well.
This is misleading.
Most of the money lose throug self custody are due to the direct action, or inaction, of the person. Only a few of them have been a result of the self custody product, like the ColdCard case.
There is, however, a solution to centralized custody failure: insurance.
I wish I was making this up, but just yesterday, my dad called me, and he was with my younger sister. They complained about how $500 was withdrawn from my sister's account as far back as March of this year, and she had no idea that kind of transaction took place. She wouldn't have known this if she had not requested the statement of account. The bank is claiming she made the transaction and has refused to show further proof.
Now there is going to be a lot of back and forth with the bank if that money is to be recovered.
Now imagine this was a large sum. This will lead to lawsuits, and that costs money.
This is why there are so many lawsuits. The mere fact that the funds are insured in a centralised institution doesn't mean you will easily get the money back if something bad happens to the money or the company. Financial companies don't like incurring losses. There are thousands of lawsuits on matters like this.
My point is, don't make it seem like once your funds are insured, you have nothing to worry about.
A business or company is not owned or operated by one person, so it's normal for that company not to practise self custody. So that is why you find companies giving their funds to centralised custody to manage.
But individuals can hold their money by themselves.
Self custody has its downside. It has always been talked about, but so does centralised custody.