Walt’s medical bills alone would bankrupt him for the rest of his natural life, even if he had good insurance. This is all based on real shit by the way, as we all know. No free medicare in the US.
I get the feeling this wasn’t the mentality they were going for when they wrote this damn thing, but inflation and rent and all. Just makes you think, y’know?
Also the demise of Walter is asserted to be due to its ego and not some generic “crime will get you killed!!” legalist shit that it could very well have been. In a sense, Breaking Bad is advising you to keep a low profile if you do shady buisness, not really to avoid doing shady buisness