Sure companies will fail, that's the nature of the game, I have no problem with creative destruction, but no it's not a traditional finance thing, it's a capitalist thing, if your competitor's factory shuts down, if it's worth keeping those employees and customer base, why wouldn't you?
I am not talking about "saving" companies to help customers, I am talking about eventually some of these things get marked down to a point where it's worth taking on, Binance and Coinbase are already bidding for BlockFi. If you can spend lets say 200 million and acquire a bunch of customers cheaper than you would competing and marketing for them, why wouldn't you?
Even with acquisitions customer deposits are not guaranteed, they're all unsecured creditors. I don't mind companies going bust, its a good lesson in self custody, which I preach all the time.