Earlier quoted context omitted.
"SIPC protects against the loss of cash and securities – such as stocks and bonds – held by a customer at a financially-troubled SIPC-member brokerage firm. The limit of SIPC protection is $500,000, which includes a $250,000 limit for cash." https://www.sipc.org/for-investors/what-sipc-protects
> $500,000 That's way too low. The other thing this exposed is that FDIC protection for businesses is also too low.
There are a lot of limits and thresholds like this that could use regular (or even extant) reindexing.
EDIT: it was increased to 250k in 2008 or 2010. As you note this is too low. It seems like it has been rather low its whole history. Given that our inflation rates are basically halving the currency every decade or so, it should be reindexed much more frequently (and also raised in any terms).