Pyrex is a great example of the problem here. Original PYREX was borosilicate glass which is extremely resistant to shattering due to temperature differences a

Pyrex is a great example of the problem here. Original PYREX was borosilicate glass which is extremely resistant to shattering due to temperature differences and therefore excellent for cooking. The brand and reputation of quality was established. Time to profit. The brand was sold and gutted. The material was replaced with cheaper soda lime glass, which if you google “exploding Pyrex” you will discover is dangerously far less resilient to temperature changes. Presumably out of shame the brand changed to pyrex from PYREX except for lab glass which retains the capital letters.